How to Graph the Linear Equation x + 4y = 8 скачать в хорошем качестве

How to Graph the Linear Equation x + 4y = 8

In this video we'll draw the graph for x + 4y = 8. If we rearrange the equation x + 4y = 8 we can also use the slope intercept formula to draw the graph. The general format y=mx + b (sometimes written y=mx + c). b tells us where the graph crosses the y axis. That gives us our first point for the graph. We can use the slope to find the rise over run. The slope, m, is -1/4 So we go DOWN 1 on the y axis and over 4 on the x axis. We can do that as many times as we need to in order to draw an accurate line. I prefer to use the slope intercept form since it is much quicker with some practice. Then I’ll plug some values into x + 4y = 8 to make sure they fall on the line. If they don’t there is likely a problem. When graphing equations it is helpful to have them in slope intercept form (y = mx + b), just like we have in this video.