What point is on the f(x)=5^x

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

|p| > 3 {-3, 3} {p|-3 < p < 3} {p|p < -3 or p > 3}