Question

Write in the slope intercept form an equation of the line that passed through the given points.

(-2,-2),(1,7)

Answer 1

y=3x+4

Explanation:

first you find the slope by doing change in y over change in x. The change in y is 9 because 7-(-2)=9. The change in x is 3 because 1-(-2)=3. Then you do 9/3 which is 3, which is your slope, or m.

So now you know y=3x+b, then you substitute one of the points in for x and y, and you get 7=3(1)+b, where b is your y-intercept. then you solve, and find that b=4.

Now you put it into slope intercept form, which is y=mx+b, where m=3 and b=4, so you are left with y=3x+4.

Leave a thanks if I am correct please.