1 Quick Review: Slope is… Positive Slope: Negative Slope: Steepness of a line, m, rise, change in y, common differencerun change in xPositive Slope: Negative Slope:Zero Slope: Undefined Slope:
2 SOLVING FOR Y AND PUTTING EQUATIONS INTO Slope - Intercept Form Chapter 12-3
3 CONCEPT: Any linear equation can be graphed on a coordinate plane. In order to be able to graph the equation, it has to be set up properly.Doctor / surgeryDrivingVacationThe ONLY way to graph an equation is from slope-intercept form.
4 y = mx + b **Slope-intercept form: y = mx + b m is the slope and b is the y-intercept.m and b are place holders for numbers. In slope-int. form, m & b will be numbersy = mx + bSlopey-intercept
6 Slope-intercept form is how you need an equation to be so that you can EASILY graph it. Standard form is another way of seeing a linear equation, but you can’t graph it – you would have to put it into slope-intercept form.
7 To put any linear equation into slope-intercept form, you have to use inverse operations to solve for y.
8 Let’s put this equation in slope-intercept form: 5y = 3x