Question

write an equation in slope-intercept form of the line through points (-10,-3) and (-1,1)

Answer 1

you can get the slop from any two points. y = mx + b
m = slope = rise/run
1 -(-3) = 4 = rise
-1 - (-10) = 9 = run
m = 4/9
y = 4/9x + b
SUB ONE POINT
1 = 4/9(1) + b
b = 5/9

therefore y = 4/9x + 5/9

Answer 2

it is multiple choice and it doesn't have 5/9 as one of the choices. it is either -13/9 or +13/9.