A line passes through (-1, 7) and (2, 10). which answer is the equation of the line?

a. - x y=8-x y=8

b. - 3x y=4-3x y=4

c. - 3x y=16-3x y=16

d.-x y=12

First you need to find the slope of the line. So what you need to do is y^2-y^1 / x^2-x^1

(x^1, y^1) (x^2, y^2)

(-1, 7) (2, 10)

10-7 / 2 - (-1)

3/3=1

slope is 1

I got 8 as the y intercept. Reason how is that I made a table. And what I did was go back instead of going forward.

x y

-1 7

0 8

1 9

2 10

The answer would be x = 1 y = x + 8 y=8 But the answer choice you listed for A. would not match up the 2 coordinate you gave. Make sure a. should be x = 1 y = x + 8 y=8, not - x y = 8-x y=8