Question

Write an equation in slope-intercept form of the line that passes through (1,9) and (-3,-9)

Answer 1

`y = (9)/(2) x + (9)/(2)`

Explanation:

`m = (9 - ( - 9))/(1 - ( - 3)) = (18)/(4) = (9)/(2)`

`9 = (9)/(2) (1) + b`

`(18)/(2) = (9)/(2) + b`

`b = (9)/(2)`

`y = (9)/(2) x + (9)/(2)`