finding the slope

[mjones]

I have a homework assignment(question) that requires me finding the slopes in order to answer the question. I have part of the answer figured out but it's the second part that is causing me problems. (2,2) (10,y)
10-5/6-2=5/4
y-5/10-6=?
please help

 

[Denis]

Post the ORIGINAL problem IN FULL.
What you posted makes no sense...

 

[mjones]

A line passes through (-2,5) and (6,10). A line parallel to it passes through (2,2) and (10,y). Determine the value of y. I was told that I would have to first find the slope before I could answer the question. THANK YOU for responding....Any help you can give will be greatly appreciated.

 

[Aladdin]

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Two parallel straight lines means that they have equal slopes . . .

Find the slope of the first line & find the second slope of the second line in terms of y . . .

Set them equal ~

 

[alohacharlie]

You had the right approach but you made a slight error ( the slope is not 5/4)

[attachment=0:gvayp81z]upload slope problem.jpg[/attachment:gvayp81z]

 

[mjones]

thank you......How do I use the equation backwards inserting the second set of points?

 

[Denis]

A line passes through (-2,5) and (6,10). A line parallel to it passes through (2,2) and (10,y).

(-2,5) and (6,10) : slope = (10 - 5) / (6 -(-2)) = 5 / 8

(2,2) and (10,y) : slope = (y - 2) / (10 - 2) = (y - 2) / 8

Lines are parallel, so slopes are equal: (y - 2) / 8 = 5 / 8

If you can't solve that for y, see your teacher...

 

[mjones]

thanks