Need math help to solve and check slope(m)=undefined through (-8,11)

timer Asked: Nov 18th, 2015
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Question Description

Solve and check the equation(y=mx+b) for slope(m)=undefined through (-8,11)

How do you show work on this? I know it's x=-8, but I don't know why and is checking this equation even possible? By checking I mean like putting in the point to check. My teacher needs me to show work. 

Tutor Answer

Naftaly K
School: Boston College

Thank you for the opportunity to help you with your question!

take arbitrarily point (x,y)

m = change y over change in x

m = y-11divide by x --8

m(x + 8)  = y- 11

xm + 8m  = y - 11

y = xm + 8m + 11

y = m( x + 8) + 11

       b =11

Please let me know if you need any clarification. I'm always happy to answer your questions.

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awesome work thanks

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