Question

The vertex of this parabola is at (-2,-3). When the y-value is -2,the x-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Answer 1

Hello,

Vertex=(-2,-3)

Equation of the parabola is y=k(x+2)²-3
(-5,-2) is a point of the parabola
==>-2=k(-5+2)²-3==>3-2=k*9==>k=1/9

Equation is y=1/9* (x+2)² -3

The coefficient of the squared expression in the parabola's is 1/9

Answer 2

It is -3

Explanation:

I just missed it and it told me the right answer and the dude before me made me get it wrong. APEX