Question 79879
lines that are parallel have the same slope (the m in y=mx+b), but have different y-intercepts (the b term)


when a line goes through a point, it means that the x and y values of the point satisfy (fit) the equation of the line


y=-3x+b for x=2, y=3 ... 3=-3(2)+b ... 3=-6+b ... b=9 ... y=-3x+9


y=(1/2)x+b for x=-3, y=-1 ... -1=(1/2)(-3)+b ... -1=-(3/2)+b ... b=1/2 ... y=(1/2)x+(1/2)