Question

Which is the correct input-output table for the function f(x) = 7 – 4.5x?

Answer 1

Step 1: Divide both sides by x.fxx=−4.5x+7xf=−4.5x+7xAnswer:f=−4.5x+7x

Answer 2

Input (x): 1 3 4 6 10

Output f(x): 2.5 -6.5 -11 -20 -38

*Answer B on PLATO