4.4 Slope of a line – Paul Nguyen

Objective A – To find the slope of a straight line given two points

So now that we know what slope is, we find that the slope between to points $(x_1,y_1)$ and $(x_2,y_2)$ is $M=\frac{y_2-y_1}{x_2-x_1}$

Objective B – To graph a line given a point and the slope

When an equation is in the form $y = mx + b$ , the slope is $m$ , the y-intercept is $b$ or $(0,b)$ . The line can be graphed by plotting the y-intercept and then using the slope to find additional points on the graph. Draw a line through the points, across the graph.

Here’s a worksheet you can practice graphing lines in slope-intercept form with.