Khan Academy

Description: Express an equation on a graph where we plot at least 2 points. In the table below, x represents the number of questions that you answer correctly, and y represents the total number of points that you score on your quiz. You could say, well, look, if I got 0 questions right I'm going to have 0 points. So if I get one question right, I'm going to get 5 more points, and we saw that in our table as well.

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