SOLUTION: find an equation for a line parallel to 3x+y=7 passing through (2,-1)

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Question 403271: find an equation for a line parallel to 3x+y=7 passing through (2,-1)
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
find an equation for a line parallel to 3x+y=7 passing through (2,-1)

3x+y=7
y=-3x+7
compare with y= mx+b
m= -3 passing through (2,-1)
The slope of parallel line will be the same. m=-3
plug the values in y=mx+b
-1=-3*2+b
-1=-6+b
-1+6=b
b=5
..
The equation is
y= -3x+5
...
graph%28300%2C300%2C-5%2C5%2C-5%2C5%2Cy=%28-3x%2B7%29%2Cy=%28-3x%2B5%29%29