Question 310002
Draw a linear graph on the same set of axes and determine the points of intersection from the graphs drawn:

y=x+1
y=-2x-1
y=x-3
----------------
Each eqn will give a graph that's a straight line.  Find 2 points and draw a line thru them.
y = x+1
Pick values of x, and find y
x = 0, y = 1 --> (0,1)  one point
x = 5, y = 6 --> (5,6) a 2nd point
Plot them, draw a line thru them.
---------------------
Do the same for the other 2 eqns.