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December 28, 2014

December 28, 2014

Posted by **spirit73** on Tuesday, September 22, 2009 at 12:12pm.

(8,9); 7x+y=2

the equation of the line is y=?

- algebra -
**Reiny**, Tuesday, September 22, 2009 at 12:35pmgiven line 7x+y=2 or

y = -7x + 2

the slope of the given line is -7 so the slope of the new line is +1/7

then y = (1/7)x + b

plug in the point

9 = (1/7)(8) + b

63 = 8 + 7b

b = 55/7

so y = (1/7)x + 55/7

check:

Ls = 9

Rs = (1/7)(8) + 55/7 = 63/7 = 9 , Yeah!

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