Answer:
y=10x+1
Step-by-step explanation:
subtract [tex]\frac{21}{2} - \frac{-9}{-1}[/tex] to get a slope of 10
insert the slope into the equation with one of the points. 21=10(2)+b
then solve 21=20+b b=1
place slope and y-intercept ito the equation. y=10x+1
