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Mathematics 19 Online
OpenStudy (anonymous):

Can someone please help me!

OpenStudy (anonymous):

Really? No one? Please I have a midterm tomorrow!

jimthompson5910 (jim_thompson5910):

with what? please post the problem

OpenStudy (anonymous):

thank you! Determine the slope and the y-intercept of the graph of the equation. 12x - 7y - 84 = 0

OpenStudy (anonymous):

A) m =12/7 ; (0, -12) B) m =7/12 ; (0, 7) C) m = 12; (0, 84) D) m = -12/7 ; (0, 12)

jimthompson5910 (jim_thompson5910):

Do you know how to solve for y?

OpenStudy (anonymous):

no is ity= mx+b

jimthompson5910 (jim_thompson5910):

yes you want to get the equation into that form

OpenStudy (anonymous):

or 12x =84 im lost!

OpenStudy (anonymous):

or ()()

jimthompson5910 (jim_thompson5910):

Solve for y to get 12x - 7y - 84 = 0 12x - 7y = 84 -7y = -12x + 84 y = -12/(-7)x + 84/(-7) y = 12/7x - 12

jimthompson5910 (jim_thompson5910):

The equation is now in the form y = mx+b where m = 12/7 and b = -12 So the slope is 12/7 and the y-intercept as a point is (0, -12)

OpenStudy (anonymous):

thank you so much! I knew that! Just forgot!

OpenStudy (anonymous):

12x - 7y - 84 = 0 -7y = -12x + 84 y= 12/7 x + 84/(-7) so m=12/7 and y-intercept= -12

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