graphing functions

Question

If (−3, 7) is a point on the graph y = 2 f ( x) + 5, what point must be on the graph of y = f ( x) ?

Answer 1

y=2f(x)+5

plug in the point (-3,7)

7=2f(-3)+5

2f(-3) = 7-5 = 2

f(-3) = 2/2 =1

f(-3)=1

(-3,1) is on the graph of f(x)