266,939 views
21 votes
21 votes
A line passes through (9,-1) the point and has a slope of 2/3.

Write an equation in slope-intercept form for this line.

User Bitprophet
by
2.6k points

2 Answers

8 votes
8 votes

Answer:

y = 2x-17

Explanation:

We have a point and a slope, we can write the equation in point slope form and then convert to slope intercept form

y-y1 = m(x-x1) where m is the slope and (x1,y1) is the point

y-1 = 2(x-9)

Distribute

y-1=2x-18

Add 1 to each side

y-1+1 = 2x-18+1

y = 2x-17

This is slope intercept form

Explanation:

User Kashif Mustafa
by
3.0k points
7 votes
7 votes

Answer:

y = 2/3 x - 7

Explanation:

y = mx + b

y = 2/3 x + b

-1 = 2/3 × 9 + b

-1 = 6 + b

b = -7

y = 2/3 x - 7

User HansHarhoff
by
3.4k points