Tuesday

July 29, 2014

July 29, 2014

Posted by **DrBob222** on Thursday, February 1, 2007 at 3:37pm.

is constant and

y=3 when x=2

then when

y=12, x equals?

My answer was 13. Im not sure how to solve this question. Could you please go through the steps so I can see they match up with mines.

My Steps:

3x-y:y+15

3x-12:12+15

3x-12:27

-12-27:-3x

-39:-3x

13:x

I'll try again:

3x-4:y+15

3x:12+15+4

3x:31

Now what. Is what I did right?

I need help with this problem.

Given that the ratio of

3x-4 to y+15

is constant and

y=3 when x=2

then when

y=12, x equals?

My answer was 13. Im not sure how to solve this question. Could you please go through the steps so I can see they match up with mines.

My Steps:

3x-y:y+15

3x-12:12+15

3x-12:27

-12-27:-3x

-39:-3x

13:x

The problem said the ratio was a constant when x=2 and y=3

I substituted x = 2 and y=3 and solved for the constant.

(3x-4)/(y+15) = k

I found 1/9 for k.

Then I started anew, substituted y=12 and solved for x.

There may be an easier way to do it but I think this will work.

I tried that did I not. I honestly don't understand. Can you please type it out.

**Related Questions**

math - if (2x-3):(y+4)=k where k is a constant and x=4 when y=2 then find x when...

Math...Algebra :S - Hi, okay um. I'm trying to get his math question (Algebra :o...

math - Multiply and simplify 2/3*13 The answer is 22. Right? if you mean (2/3...

Math - What is 2-3(-2) equals what please answer this question

math 12 - i got the wrong answer from the back, and i know that imnot dooing it ...

Please check my maths answer? - This is the question: The straight line y=2p+1 ...

Math(Please answer just a quick question!!!!) - If the time elapsed is 4.26 min...

Math - If 6 is increased by 4 times a number, the result is 68. A.Write and ...

Algebra 1B - Please help I am so confused... Question: supposed that y is ...

math - can someone correct this for me please... Solve for x: 6x minus 1 divided...