5. Consider the graph below.
a. Is the graph a function? How do you
know? Yes
y = f(x)
b. If the input is 1, what is the output?
This is the same as writing f(1) =
-9-8-7-6-5-4-3-2
+ 1 2 3 4 5 6 7 8 9
ܝ
C. Evaluate the function for the following.
i. f(3)
ܞ
ii.
f(x) = 4
ܗ ܀

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.