Example 12. x, y, and = are the measures of the angles shown in the figure. The sum of y and - in terms of x is:
A.2x B. 90° + x C.180º – X D. 180° – 2x E. 90° – x

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.