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Mathematics 15 Online
OpenStudy (juliannamartineez):

which graph best represents the equation -5x + 2y = 2

OpenStudy (juliannamartineez):

OpenStudy (juliannamartineez):

OpenStudy (juliannamartineez):

i think c

OpenStudy (1davey29):

It would be A, not C. You would solve for y, so -5x+2y=2, 2y=5x+2, y=(5/2)x+1. You didn't divide the 2 for the y-intercept by 2 as well to get 1.

OpenStudy (juliannamartineez):

i have a couple more would you mind helping?

OpenStudy (juliannamartineez):

@1davey29

OpenStudy (1davey29):

Sure, but I only have about 20 minutes left

OpenStudy (juliannamartineez):

which equation best represents the line graphed above? a. y = 1/2 x - 1 b. y = - 1/2 x - 1 c. y = 2x -1 d. y = x + 1

OpenStudy (juliannamartineez):

OpenStudy (1davey29):

y=mx+b. y-int(b) is -1, so y=mx-1. Slope(m)=(y2-y1)/(x2-x1), so, choosing two random points (0,-1),(2,0), y=(0-(-1))/(2-2)=1/2. Plugging in your values, y=(1/2)x-1, which is a.

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