Plot the given point B(3,5) and a vertical line through it:
Next draw several possibilities for A(x,3), for instance
A(-4,3), A(-1,3), A(1,3), and A(5,3
Draw a line through them:
Now you can see that the only value of x is the value where the
blue line crosses the green vertical line, which is at A(3,3)
could you mark Brainy PLS
