To find the equation of the line with the points (-3,-1) and (-4,-7)
First find the slope
m = (y2 -y1) / (x2-x1)
Replace
m= (-7-(-1) / (-4-(-3)
m= -6/-1
m = 6
Use the next formula y-y1 = m(x-x1)
y-(-1) = 6 (x-(-3)
y+1 = 6x +18
y = 6x +18 -1
y = 6x + 17, this is the answer is the slope-intercep form
