Question

Find the rule and solve for n.

Answer 1

• (10,1)
• (12,3)

Rule denotes to equation

`\\ \rm\rightarrowtail m=(3-1)/(12-10)=(2)/(2)=1`

Equation in point slope form

`\\ \rm\rightarrowtail y-1=x-10`

`\\ \rm\rightarrowtail y=x-9`

So

`\\ \rm\rightarrowtail n=20-9=11`