Question

If the point (-18,-3) is on the graph of y=q(x), what point must be on the graph of y=5q(x)+8

Answer 1

We only know that (-18, -3) works in q(x). So, what's the only x-value we can use for a defined q(x) value?

Answer 2

(18 , 3) ?

Answer 3

No... we will have the same x-value as the defined point for q(x).
(-18, y).

We then insert the value of q(x) when x=-18, and evaluate for the y-value.

Answer 4

so y = 5q(-18) + 8

Answer 5

Yeah.

Answer 6

We can then substitute in the value of q(x) when x=-18 that we were given originally, and that should give us the actual number.