A and A
the equation of a parabola in vertex form is
y = a(x - h)Β² + k
where ( h, k ) are the coordinates of the vertex and a is a multiplier
y = - 2(x + 3)Β² + 2 Β is in this form
with vertex = ( - 3, 2)
To find the y-intercept let x = 0
y = - 2(3)Β² + 2 = - 18 + 2 = - 16
Similarly
y = - 2(x + 2)Β² + 2 is in vertex form
vertex = ( - 2 , 2)
x = 0 : y = - 2(2)Β² + 2 = - 8 + 2 = - 6 β y- intercept
