Posted by **Britt** on Saturday, December 8, 2007 at 1:54pm.

Find the equation of the line containing (7,11) and parallel to y=6.

Find the equation of the line having x-intercept of 5 and y-intercept of -5.

I know that y=mx+b, b=y-mx, and parallel lines have the same slope

- Cal -
**drwls**, Saturday, December 8, 2007 at 2:22pm
A y = 6 line has zero slope. If it goes through (x,y) =(7, 11), the equation must be y = 11.

For your second question, the line goes through (x,y) = (5,0) and (0,-5). The slope is therefore (-5 -0)/(0 -5) = 1

The equation must be of the form

y = x + b

Plug in the coordinates of either point to solve for b.

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