Question

(-1,-9) and (2,21) into an equation

Answer 1

y=10x+1

Explanation:

subtract
`(21)/(2) - (-9)/(-1)` 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