Question

Which quadratic has a graph with x-intercepts of 6 and -6?

A)
y = x2 - 6


B)
y = x2 - 36


C)
y = x2 + 36


D)
y = x2 -12x + 36

Answer 1

the answer is B i did the test

Explanation:

Answer 2

If x' & x" are the roots (or x intercepts) of a quadratic equation, then it could be written:
y= (x-x')(x-x")

Since -6 & +6 are the roots of the quadratic function, then it could be written

as follows y= (x+6)(x+6) ===> y= x²-36. So the answer is B