We will solve, by writing the rule, that is:
*We first find the slope:
[tex]m=\frac{12-4}{3-1}\Rightarrow m=4[/tex]
Now, we will find the rule:
[tex]y-4=4(x-1)\Rightarrow y=4x[/tex]
Now, we calculate the values for 5 and 7, those are 20 & 28 respectively.
*** The rule is y = 4x
