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Mathematics 19 Online
OpenStudy (anonymous):

helpp almost done!! http://img594.imageshack.us/img594/9951/121026165353.png

OpenStudy (phoenixfire):

\[y=mx+c\]They want you to find the y-intercept, c. So you need to calculate the gradient, m.\[m={\Delta y \over \Delta x}={{y_1 - y} \over {x_1 - x}}\]You have two points, plug them in and find the gradient. Then substitute the gradient and one of the points into the line equation, and solve for c.

OpenStudy (anonymous):

hmm

OpenStudy (phoenixfire):

Do it step by step. Find the gradient. What do you get?

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