Question

plot the points (3, 5) and (-1, 3 )and verify from the graph that the straight line joining these points passes through the point (1, 4)

Answer 1

 plot the points, draw a line and see if this line passes through the point (1,4) also or should I make an equation in two variables which apply for both (3,5) and (-1,3) and take x=1 and y=4 and see ifit works out .