Question

Find the slope-intercept equation of the line that passes through (3,-1) and has a slope of -1

Answer 1

y= -x+2

Explanation:

slope formula: (y2-y1)/(x2-x1)

at the point (3,-1), it is known that x=3 and y= -1.

[y-(-1)]/(x-3)= -1

(y+1)/(x-3)= -1

(y+1)= -1(x-3)

y+1= -x+3

y= -x+2