A line containing the points 9,1 and 5,5 intersects the x-axis at what point?
Find slope , m, between the points (y1-y2) / (x1-x2) = -1
y = -x + b sub in one point to find b = 10
y = -x + 10 when the line crosses the x axis y = 0
0 = - x + 10 shows x = 10