For number 11 you have to explain how you get your answer

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13

Using the rise/run counting method, the slope of the line is