PLEASE HELP
which of these graphs represent a function

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Will give brainliest b. describe the function over each part of its domain. state whether it is constant, increasing, or decreasing, and state the slope over each part.

The difference between the measures of two complementary angles is 14. find the measure of both angles.