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Mathematics 8 Online
OpenStudy (anonymous):

Complete the equation for the linear function whose graph contains the points (9, 7) and (4, –8). y − = (x − 9)

OpenStudy (anonymous):

hello?

OpenStudy (anonymous):

@perl

OpenStudy (perl):

yes

OpenStudy (perl):

first I would find the slope

OpenStudy (anonymous):

well if you subtract your x and y values from one another, you'll see that the X value loses 5, and the y value loses 15 points. from that you can determine the gradient. then use this figure to find where y=0 for the intercept

OpenStudy (perl):

Let's use an equation that you are probably familiar with. (there is more than one equation of a line) Are you familiar with y = mx + b

OpenStudy (anonymous):

yeah im familiar with it

OpenStudy (perl):

pking is right, what he calls gradient we call slope

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