Question

Which equation could be used to solve the graph below

A. x^2+x-2=0
B.x^2+2x+1=0
C.x^2-1=0
D.x^2-2x+1=0

Answer 1

y=ax²+q

q= -1 turning point of the graph

(-1,0)(1,0)

0=a(1)²-1

0=a-1

a= -1