Algebra
OpenStudy (anonymous):

Points F and G lie on the graph of the equation y = −0.25x. What are the y-coordinates for each point? (4,_) (-8,_) Monroe is graphing the equation . He has placed a point on the origin, and uses the slope to find two more points. Which points does Monroe plot on his graph? Choose exactly two answers that are correct. A.(−9, 4) B.(−4, 9) C.(4, −9) D.(9, −4) What is the equation of the graphed line? http://static.k12.com/calms_media/media/1503000_1503500/1503203/2/3fb97202ea1472e8df07e0250cb462b9a62b679a/MS_IMC-140516-1000013.jpg

OpenStudy (anonymous):

@pottersheep @vlery

OpenStudy (anonymous):

@tinybookworm

OpenStudy (anonymous):

For the first problem, we would put x into the function to find y. For example, we had x = 4, so $$y=-0.25x=-0.25 \times 4=1$$. You can do the same thing with the second point.

OpenStudy (anonymous):

I don't get the second problem. Sorry

OpenStudy (anonymous):

As you know, the general form of a function is $$y=mx+b$$, $$m$$ is the slope, $$b$$ is the y-intercept. Now we have to find $$m$$ and $$b$$. As you can see, when x runs 6, y rises 1. Therefore, $$slope = m = \frac{rise}{run}=\frac{1}{6}$$. Next, we need the y-intercept. In this case, y-intercept is clearly 0. So the equation of the line is $$y=\frac{1}{6}x+0=\frac{1}{6}x$$.

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