Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. Which
function could Heather be writing?
f(x) = x2 + 36x + 12
f(x) = x2 – 36x – 12
f(x) = -x2 + 12x + 36
f(x) =-*- - 12x - 36