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Mathematics 7 Online
OpenStudy (anonymous):

What is the equation of the following line. please help!!

OpenStudy (anonymous):

OpenStudy (anonymous):

Any idea?

OpenStudy (anonymous):

A line with points \((0,0)\) and \((1,7)\).

OpenStudy (anonymous):

Well first find the slope, using the following formula, since you're given two points: \[m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\] where your coordinates represent \[(x_1,y_1)~~\text{and}~~(x_2,y_2)\] Once you manage to get that, plug in m and your first coordinates in the point - slope form: \[y-y _{1}=m(x-x _{1})\] do some little algebra and eventually you will have slope - intercept form \[y=mx+b\] you don't have to do it this way, but I think it's good practice anyways.

OpenStudy (anonymous):

b = y - intercept where the line crosses the y - axis

OpenStudy (anonymous):

is it y=7x

OpenStudy (anonymous):

\[ \frac{y-y_1}{x-x_1}=\frac{y_2-y_1}{x_2-x_1} \]

OpenStudy (anonymous):

Yes

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