Posted by **amy** on Friday, January 11, 2008 at 10:55pm.

I can't figure this out at all

Determine which two equations represent parallel lines. y=-4x+1,y=4x+1,y=1/4x+1,y=-4x+5

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**DrBob222**, Friday, January 11, 2008 at 11:03pm
y = mx + b is the general equation for a straight line. To be parallel, you want the lines to have the same slope; therefore, m in the general equation should be the same. If your equation is

y = -4x + 1, you want the parallel line to be -4x + anything. Check my thinking.

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**Kara**, Friday, January 11, 2008 at 11:07pm
so it would be a and d

- math -
**DrBob222**, Friday, January 11, 2008 at 11:31pm
yes

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