Consider the following function and express the relationship between a small change in x and the corresponding change in y in the form dy =f' (x )dx.
f(x) = cot [10 x]

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? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36