Question 316590
The equation of the line is given in slope-intercept form. The slope is 2 and the y-intercept is -1. 

An easy way to make a graph is to plot two points. When x=0, y=-1; and when x=1, y=1. Plot these two points and make a straight line going through them (since it's a linear equation) and you have your graph! Here is a picture: 

{{{ graph( 500, 500, -10, 10, -10, 10, 2x-1) }}}