Graphing Quickly Using the Slope and the Y-Intercept

If you are given the equation for a line in the slope-intercept form, graphing it is a snap. The number before the x term is the slope of the line, and the number added to or subtracted from the x term is the y value of the y-intercept. To graph the line, locate the y-intercept, and then move up or down according to what the slope of the line needs to be to find another point on the line. The only kicker is you must have the equation in the slope-intercept format for this "trick" to work.

After reading lesson 4.6, please do the odd problems, from 13 through 55.