Question

A line passes through the points (2, 7) and (4, -7). Write its equation in slope-intercept form.

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Write your answer using integers, proper fractions, and improper fractions in simplest form.

Answer 1

y = -7x + 21

Explanation:

`(2,7)(4,-7)`

m = slope

`m=(y_2-y_1)/(x_2-x_1)`

`m=(-7-7)/(4-2)`

`m=(-14)/(2)`

`m=-7`

`y=-7x+b`

(2, 7)

`(7)=-7(2)+b`

`7=-14+b`

`b=7+14`

`b=21`

`y=-7x+21`