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