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March 29, 2015

March 29, 2015

Posted by **Liz** on Thursday, August 2, 2012 at 3:57am.

Question:

supposed that y is directly proportional to x.

a) use the given info to find constant of proportionally k.

b) then use y=kx to find y for x=6

y= -62 when x=5

Please help.. thank you

this is all I have so far. not sure if I am correct.

y=kx

-62= k*(5)

but then how do I solve for k?

- Algebra 1B -
**Damon**, Thursday, August 2, 2012 at 4:11am-62= k*(5)

divide both sides of your equation by 5

-62/5 = k

k = -12.4

now if x = 6

y = -12.4 * 6

y = -74.4

- Algebra 1B -
**Liz**, Friday, August 3, 2012 at 12:47amThank you so much! Now I undersand .. :)

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