Laura & mary are doing their homework together. mary thinks the relation {(1, 1), (1, 3), (2, 3), (3, 4)} is a function, but laura doesn’t think it is. who is correct and why?

Laura is correct.

A function is a relation in which every x-value corresponds with no more than one y-value.  In this problem, the x-value 1 has two different answers; this means it is not a function.

Additionally, if you graphed this, it would not pass the vertical line test.

G. -5/2

Step-by-step explanation:

First we want to distribute the 6 into q and 3.

6q + 18 = 2(q + 4)

Next distribute the 2 into q and 4.

6q + 18 = 2q + 8

Now the variable needs to be on one side of the equation. Subtract 2q from  both sides.

4q + 18 = 8

Isolate the variable. Subtract 18 from both sides.

4q = -10

Divide 4 on both sides.

q = -10/4

We can now simplify this even further. Divide -10/4 by 2/2

q = -5/2