SOLUTION: Graph the linear function: f(x) = 7x - 8

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Question 791109: Graph the linear function: f(x) = 7x - 8
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Looking at y=7x-8 we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=7 and the y-intercept is b=-8


Since b=-8 this tells us that the y-intercept is .Remember the y-intercept is the point where the graph intersects with the y-axis

So we have one point




Now since the slope is comprised of the "rise" over the "run" this means
slope=rise%2Frun

Also, because the slope is 7, this means:

rise%2Frun=7%2F1


which shows us that the rise is 7 and the run is 1. This means that to go from point to point, we can go up 7 and over 1



So starting at , go up 7 units


and to the right 1 unit to get to the next point



Now draw a line through these points to graph y=7x-8

So this is the graph of y=7x-8 through the points and