Which set of ordered pairs represents a function?
a = {(3, -5), (4, 6), (-3,9), (2, 7)}
b = {(2, 4), (-1, -7), (5, 6) (4,3)}

a) only a
b) neither a nor b
c) only b
d) both a and b

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.

Combine like terms to make a simpler expression 3z+z