Question

What is the rule for this input output tabel?

Input Output
5 12
8 24
11 36
14 48

Answer 1

Call the input x and the output y

For each increase in x by 3, y inreases by 12. Thus the slope in the equatiuon
y = mx + b is m = 4
12 = 4*5 + b
b = -8

y = 4x -8 is the formula or "rule"