Question

The vertex of this parabola is at (-2, -3). When the x-value is -1, the

y value is -5. What is the coefficient of the squared expression in the
parabola's equation?
(-2,-3)
10

Answer 1

Explanation:

y = a ( x - -2)^2 - 3 <======vertex form of the parabola ...find 'a'

when x = -1 y = -5 sub these into the equation

-5 = a( -1 +2)^2 -3 add 3 to both sides of the equation and simplify

-2 = a