VIEWS: 4 PAGES: 8 POSTED ON: 10/6/2012
Graph using Slope- Intercept Form Review What are two ways you find the slope of a line? Slope formula Plotting points and finding the rise and run between points Now let’s see another way to graph a line Slope-Intercept Form y = mx + b slope y-intercept When the equation is in this form, you can identify the slope (m) and the y-intercept (b). Examples Identify the slope and y-intercept y 3x 4 m=3 b= 4 3x y 2 m = -3 b=2 If the equation is not setup like y = mx + b, then you must manipulate the equation to that format. The general steps include: -Add/Subtract your x value -Multiply/Divide both sides of the equation by the coefficient of y Do these examples on your own paper 3x 3 y 12 x 4y 6 slope y-intercept slope y-intercept m=1 b = -4 m = -¼ b= 3 2 Graph the equation 2x + y = 3 Step 1: Rewrite the equation in slope-intercept form y = -2x + 3 Step 2: Identify the slope and the y-intercept m = -2 b=3 Step 3: Plot the point that corresponds to the y-intercept y-intercept - (0,3) Step 4: Use the slope to locate a second point on the line. Draw a line through the two points. Quiz time!!!! Take everything off your desk and get ready for the quiz!
Pages to are hidden for
"Graph using Slope-Intercept Form"Please download to view full document