Answer:
y = (5/3)x^2 +(4/3)x -4
Step-by-step explanation:
Given the x-intercepts, you can write the quadratic as ...
y = a(x +2)(x -1.2)
The y-intercept of this equation will be ...
-4 = a(0 +2)(0 -1.2) = -2.4a
-4/-2.4 = a = 5/3 . . . . divide by the coefficient of "a" and simplify
The equation is then ...
y = (5/3)(x +2)(x -1.2) = (5/3)(x^2 +0.8x -2.4)
y = (5/3)x^2 + (4/3)x - 4
_____
Verified by graphing.
