McKinley C.

asked • 10/16/20

Find two points on the graph of the parabola other than the vertex and x-intercepts.

k(x)= x2+6x+5

A: (_______,______)

B: (_____,_______)



2 Answers By Expert Tutors

By:

Bakar B.

Additionally, it is important to know where the vertex and x-intercepts are so those points aren't chosen: The x-intercepts occur where k(x) = 0; factoring the function and finding the roots (x-intercepts): k(x)= x^2+6x+5; k(x) = (x + 5)(x + 1) = 0; x = -5, x = -1; so neither A nor B should use these x-values. The vertex occurs midway between the x-intercepts, in this equation, because parabolas are always symmetrical. So x = -3 is also off-limits.
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10/16/20

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