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Help With Geometry homework?

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  • Help With Geometry homework?


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Answer #1 | 06/01 2014 20:15
1.) If line 1 is perpendicular to line 2, then the slope of line 1 is the negative reciprocal of the slope of line 2. The slope of line 2 in this problem is -⅓, so the slope of line 1 is 3, so m=3. Now you put your coordinates into y=mx+b, so 1=3(2)+b and solve for b and you'll find that b=-5. So the equation of line 1 is y=3x-5. 2.) If line 1 is parallel to line 2, the slopes of line 1 and line 2 are equal. In this problem, the slope of line 2 is -3, so the slope of line 1 is also -3, m=-3. Now, you plug your coordinates into y=mx+b, so 1=-3(-1)+b. After solving for b, you will find that b is -2. So the equation of line 1 is y=-3x-2.
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