Question

The vertex of this parabola is at (4, -3). When the x-value is 5, the

y-value is-6. What is the coefficient of the squared expression in the
parabola's equation?
-10
A. 2
B. -2

Answer 1

Answer: the answer should be -3 ( if the graph looks like an upside down U)

Explanation:

y= a (x-h)^2 +k vertex is (h,k) or (4,-3) here and y=-6 , x=5

-6=a(5-4)^2 +(-3)

-6= a(1)^2 -3

-6= a(1)-3

-6+3=a

-3=a