9-3 And 9-4: Solving Quadratic Equations By Graphing And By Factoring

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| By Courtney Frank

Courtney Frank

Community Contributor

Quizzes Created: 45 | Total Attempts: 16,123

Questions: 5 | Attempts: 675 | Updated: Jan 23, 2025

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9-3 And 9-4: Solving Quadratic Equations By Graphing And By Factoring - Quiz

Questions and Answers

1.

What is the solution of
- A.
  
  -8
- B.
  
  8
- C.
- D.
  
  No Solution
Correct Answer
D. No Solution

Explanation
The given equation is -8 = 8, which is not true. Therefore, there is no solution to this equation.

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2.

One root of the quadratic equation whose related function is graphed lies between which consecutive integers?
- A.
  
  -4 and -3
- B.
  
  0 and 1
- C.
  
  -5 and -4
- D.
  
  -3 and -2
Correct Answer
A. -4 and -3

Explanation
The correct answer is -4 and -3 because the graph of a quadratic function intersects the x-axis at the x-coordinate(s) of its roots. Since the question states that one root lies between -4 and -3, it means that the graph intersects the x-axis between these two consecutive integers.

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3.

What are the zeros in the function ?
- A.
  
  {-11, -5}
- B.
  
  {17}s
- C.
- D.
  
  {5, 11}
Correct Answer
D. {5, 11}

Explanation
The zeros of a function are the values of x for which the function equals zero. In this case, the zeros of the function are 5 and 11, as these are the values of x that make the function equal to zero.

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4.

Find the x-intercepts in the function
- A.
  
  {7, 8}
- B.
  
  {-7, -8}
- C.
  
  {-7, 8}
- D.
  
  {7, -8}
Correct Answer
A. {7, 8}

Explanation
The x-intercepts of a function are the points where the graph of the function intersects the x-axis. In this case, the x-intercepts are given as {7, 8}. This means that the function crosses the x-axis at the points (7, 0) and (8, 0).

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5.

Solve
- A.
- B.
- C.
- D.
Correct Answer
C.