Question

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

Answer 1

`y=a(x+2)^(2) -3\\-2=a(-5+2)^(2) -3\\(-2+3)/(9) =a\\a=(1)/(9) \\`

Explanation: