Question

In slope-intercept form, what is the equation of the line containing the points (−1, 2) and (2, −1)?

Answer 1

y=-x+1

Explanation:

m=(y2-y1)/(x2-x1)

m=(-1-2)/(2-(-1))

m=-3/(2+1)

m=-3/3

m=-1

y-y1=m(x-x1)

y-2=-1(x-(-1))

y-2=-(x+1)

y=-x-1+2

y=-x+1