Find y if the point (-6,y) is on the line that passes through (-1,7) and (-3, -2).
+208 First find the equation of the line:
slope of line is (-2-7)/(-3-(-1)=9/2
in point slope form: y-7=9/2(x+1)
y-7=9/2x+9/2
y=9/2x+23/2
substitute x
y=9/2(-6)+23/2
y=-31/2
