Help please!! ILL GOVE BRAINLIEST IF CORRECT

If the measure of xyz is 81 what is the measure of yz

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

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