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Mathematics 11 Online
OpenStudy (xgamer7868):

(help me) What is the equation of the graphed line? https://static.k12.com/nextgen_media/assets/8080350-NG_IMC_SemA_03_UT_04.png Enter your answer in slope-intercept

OpenStudy (studygurl14):

Use the two given points to find the slope slope=\(\huge\frac{y_2-y_1}{x_2-x_1}\)

OpenStudy (mathmale):

2 points on the line are given. Please find the slope of the line from them. Your slope will be approx. equal to -1. Find the exact slope.

OpenStudy (xgamer7868):

how

OpenStudy (studygurl14):

y = mx + b m = slope b = y-intercept, which is where the line intersects the y-axis

OpenStudy (studygurl14):

I gave the slope formula above. Use that to find the slope @xgamer7868

OpenStudy (mathmale):

Now write out the general slope-intercept formula for the graph of a straight line: y=mx+b. Substitute your slope value (m) into this equation. Next, choose one (not both) of the given points, and substitute its x-and y-coordinates into this same equation. this will enable you to find the value of b, the y-intercept. Pls show all your work.

OpenStudy (xgamer7868):

ok

OpenStudy (studygurl14):

@mathmale they give the y-intercept, so @xgamer7868 doesn't need to solve for it

OpenStudy (xgamer7868):

im confused

OpenStudy (studygurl14):

You have two points (0,7) and (8,.2) right? plug those into the given slope formula

OpenStudy (xgamer7868):

ok

OpenStudy (mathmale):

I agree: the y-intercept is given and is (0,7) Find the slope, then write the equation in slope-intercept form, with b=7.

OpenStudy (xgamer7868):

so i change the numbers 1 and 2 to the points like y7 - y1 like that? x-2 - x8

OpenStudy (studygurl14):

No with two points \((x_1,y_1)\) and \((x_2,y_2)\)

OpenStudy (studygurl14):

So 0 = x1, 7=y1, and so forth

OpenStudy (xgamer7868):

ohhh btw i meant 0 where i put 1

OpenStudy (studygurl14):

Two points (0,7) and (8,-2). Plug into slope formula: \(\Large\frac{-2-7}{8-0}\)

OpenStudy (xgamer7868):

but i need the equation of the graphed line tho

OpenStudy (studygurl14):

I know. y = mx + b is the equation m = slope, so you need to find it b = 7

OpenStudy (xgamer7868):

i gtg soon hurry

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