9. The graph of which the following equations has x-intercepts of 4 and -4? (1 Point)
O y + 4 = x
O y - 4 = x
O y + 16 = x2
O x + 16 = y2

Remember that an x-intercept has a y-value of 0, so the question here really “Which of the following equations has (0,4) AND (0,-4) as solutions.”

The first two each work with one of the points, but not the other, so they’re not the answer.

The last one doesn’t work for either point.

The third one, y+16=x^2, works for both.

0 + 16 = (4)^2 is true.

0 + 16 = (-4)^2 is true.

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

0 = ( 2 - 4 ) ( p + q )0 = ( 2 - 4 ) ( 2 + 5 i ),   by multiplying these0 = ( 4 + 10 i - 8 - 20 i )0 = 4 - 8 + 10 i - 20 i0 = - 4 -10 i   0 = 2 ( - 2 - 5 i )0 / 2 = - 2 - 5 i- 2 - 5 i = 0- 5 i = 2i = 2 / - 5