Sunday

February 1, 2015

February 1, 2015

Posted by **Stephanie** on Wednesday, February 6, 2013 at 1:52am.

a = ?

- Math -
**Steve**, Wednesday, February 6, 2013 at 12:41pmslope of 1st line is (7-1)/(5-a) = 6/(5-a)

slope of 2nd line is (1-8)/(a+2-8) = -7/(a-6)

If the lines are parallel, the slopes are equal, so

6/(5-a) = -7/(a-6)

6(a-6) = -7(5-a)

6a-36 = 7a-35

-a = 1

a = -1

**Answer this Question**

**Related Questions**

adult education - Math If the line passing through the points (1,a) and (4,-2)is...

Calculus - Determine the equation of the line described by the given information...

math - If the line passing through the points (a, 1) and (5, 7) is parallel to ...

College - If the line passing through point (a,1) and (8,7) is parallel to the ...

Applied Calculus - If the line passing through the points (a, 1) and (−8, ...

maths - Determine the acute angle between the line passing through the points A...

math - i have more than one question so if u no any of the answers please tell ...

Pre- Algebra - Given an equation of a line, how do I find equations for lines ...

Algebra - I'm suppose to write an equation with the following information: Line ...

Math - If line f is parallel to the line h, and line f has y-intercept 5, what ...