Algebra 1 Practice Quiz

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Tourojhausler
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Quizzes Created: 1 | Total Attempts: 2,131
Questions: 15 | Attempts: 2,133

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Algebra 1 Practice Quiz - Quiz

This is a quiz covering topics from the first semester of Algebra 1.


Questions and Answers
  • 1. 

      The ordered pair (3,0) is found:

    • A.

      On the y-axis

    • B.

      In the first Quadrant

    • C.

      In the fourth Quadrant

    • D.

      On the x-axis

    Correct Answer
    D. On the x-axis
    Explanation
    The ordered pair (3,0) is found on the x-axis because the x-coordinate is 3 and the y-coordinate is 0. The x-axis is the horizontal line where the y-coordinate is always 0. Therefore, the point (3,0) lies on the x-axis.

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  • 2. 

    (-3, 7) is located in quadrant:

    • A.

      I

    • B.

      II

    • C.

      III

    • D.

      IV

    Correct Answer
    B. II
    Explanation
    The point (-3, 7) is located in quadrant II because the x-coordinate (-3) is negative and the y-coordinate (7) is positive. In quadrant II, the x-coordinate is negative and the y-coordinate is positive.

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  • 3. 

    The price of a house increased by 7%. If the new price is $107,000, what was the original cost of the house?

    • A.

      $100,000

    • B.

      $114,490

    • C.

      $99,510

    • D.

      $93,000

    Correct Answer
    A. $100,000
    Explanation
    The original cost of the house was $100,000. This can be determined by dividing the new price of $107,000 by 1.07, which represents a 7% increase. The result is $100,000, which is the original cost of the house.

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  • 4. 

    (8,2) is a solution of x - 3y = 6

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The point (8,2) is not a solution of the equation x - 3y = 6 because when we substitute x = 8 and y = 2 into the equation, we get 8 - 3(2) = 8 - 6 = 2, which is not equal to 6. Therefore, the statement is false.

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  • 5. 

    The graph of y = 2x + 3 passes through the origin.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The graph of y = 2x + 3 does not pass through the origin because when x = 0, y = 3. Therefore, the statement is false.

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  • 6. 

    What is the y- intercept for 5y = 4x - 20?

    • A.

      (5,0)

    • B.

      (0,5)

    • C.

      (-4,0)

    • D.

      (0,-4)

    Correct Answer
    A. (5,0)
    Explanation
    The y-intercept represents the point where the graph of the equation intersects the y-axis. To find the y-intercept, we set x=0 and solve for y. In this equation, when x=0, 5y=-20, which means y=-4. Therefore, the y-intercept is (0,-4). However, none of the answer choices match this y-intercept, so the correct answer is not available.

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  • 7. 

    What quadrant does the line 5x + 3y = 15 not pass through?

    • A.

      I

    • B.

      II

    • C.

      III

    • D.

      IV

    Correct Answer
    C. III
    Explanation
    The line 5x + 3y = 15 does not pass through quadrant III. This is because in quadrant III, both x and y values are negative. Plugging in negative values for x and y into the equation would result in a sum greater than 15, making it impossible for the line to pass through quadrant III.

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  • 8. 

    What is the x-intercept of x =2?

    • A.

      (0,2)

    • B.

      (2,0)

    • C.

      (0,0)

    • D.

      There is no x-intercept

    Correct Answer
    D. There is no x-intercept
    Explanation
    The equation x = 2 represents a vertical line passing through the point (2,0) on the x-axis. Since this line is parallel to the y-axis, it does not intersect the x-axis at any point. Therefore, there is no x-intercept for the given equation.

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  • 9. 

    What is the slope of the line through (6,5) and (9,1)?

    • A.

      4/3

    • B.

      -3/4

    • C.

      -4/3

    • D.

      3/4

    Correct Answer
    C. -4/3
    Explanation
    The slope of a line can be found using the formula (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of two points on the line. In this case, the coordinates are (6,5) and (9,1). Plugging these values into the formula, we get (1 - 5) / (9 - 6) = -4 / 3. Therefore, the slope of the line is -4/3.

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  • 10. 

    What is the slope of the line x = 7?

    • A.

      7

    • B.

      0

    • C.

      1/7

    • D.

      Undefined

    Correct Answer
    D. Undefined
    Explanation
    The slope of a line is defined as the change in the y-coordinates divided by the change in the x-coordinates. In the given equation x = 7, the value of x is always 7, meaning that there is no change in the x-coordinate. Therefore, the change in the y-coordinate is also undefined, resulting in an undefined slope.

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  • 11. 

    Find the slope of the line 6x-2y=12-2y?

    • A.

      6

    • B.

      1/6

    • C.

      0

    • D.

      Undefined

    Correct Answer
    D. Undefined
    Explanation
    The given equation is in the form 6x - 2y = 12 - 2y. By simplifying the equation, we can see that the variable "y" cancels out on both sides, resulting in 6x = 12. Since there is no "y" term in the equation, the slope of the line is undefined.

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  • 12. 

    Find an equation for the line with slope and y-intercept 3.

    • A.

      4x - 3y = -3

    • B.

      4x - 3y = -9

    • C.

      3y - 4x = -3

    • D.

      3y - 4x = -9

    Correct Answer
    B. 4x - 3y = -9
    Explanation
    The equation 4x - 3y = -9 represents the line with a slope of 4 and a y-intercept of 3. This can be determined by rearranging the equation into slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept. In this case, when we rearrange the equation, we get y = (4/3)x + 3, which matches the slope and y-intercept given in the question. Therefore, 4x - 3y = -9 is the correct equation for the line.

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  • 13. 

    Find an equation of the line through (25) with a slope of .

    • A.

      Y - x = 4

    • B.

      2y - 3x = 4

    • C.

      3x - 2y = 4

    • D.

      X - y = 4

    Correct Answer
    B. 2y - 3x = 4
    Explanation
    The equation 2y - 3x = 4 represents the line through the point (2,5) with a slope of 3. This can be determined by rearranging the equation to the form y = mx + b, where m is the slope. In this case, the slope is -3/2, which matches the given slope. Therefore, 2y - 3x = 4 is the correct equation for the line.

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  • 14. 

    Find an equation of a line through (3,4) and (1,-7).

    • A.

      11x - 2y = -5

    • B.

      11x - 2y = -1

    • C.

      2x - 11y = -38

    • D.

      11x - 2y = 25

    Correct Answer
    D. 11x - 2y = 25
    Explanation
    The equation of a line can be found using the formula (y - y1) = m(x - x1), where (x1, y1) are the coordinates of a point on the line and m is the slope of the line.

    Using the points (3,4) and (1,-7), we can find the slope:
    m = (y2 - y1) / (x2 - x1) = (-7 - 4) / (1 - 3) = -11 / -2 = 11/2

    Now we can substitute the slope and one of the points into the formula to find the equation:
    (y - 4) = (11/2)(x - 3)
    2y - 8 = 11x - 33
    11x - 2y = 25

    Therefore, the correct answer is 11x - 2y = 25.

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  • 15. 

    Find an equation of a line through (0,2) parallel to the line 3x-6y=1.

    • A.

      2y - x = 4

    • B.

      2y x = 2x

    • C.

      Y - 2x = 2

    • D.

      Y - 2x = 4

    Correct Answer
    A. 2y - x = 4
    Explanation
    The equation of a line parallel to 3x-6y=1 can be found by keeping the same slope. The slope of the given line is 3/6 or 1/2. Using the point-slope form of a linear equation, we can substitute the slope and the coordinates of the given point (0,2) to find the equation. Therefore, the equation of the line parallel to 3x-6y=1 and passing through (0,2) is 2y - x = 4.

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