## Algebra: A Combined Approach (4th Edition)

y=-2 is a horizontal line with y-intercept -3. Find pair solutions of y=-3 We let (x1,y1)=(0,-3) and (x2,y2)=(1,-3) m=$\frac{(-3)-(-3)}{1-0}$=$\frac{0}{1}$=0 The slope of line y=-3 is 0