PLEASE HELP!! WILL GIVE BRAINLIEST TO FIRST ANSWER
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) = –x2 – 12x – 36