\$\$ extIt is given that y= frac3a+22a-4 extand x= fraca+3a+8 \\$\$

\$\$ extExpress y ext in terms of x.\$\$

From making use of \$x\$ to fix for \$a\$, I discovered that \$\$a = frac8x-31-x\$\$

Then ns proceeded to instead of \$a\$ right into \$y\$. Ns did this double to for sure no mistakes space made, and also my last answer because that both was

\$\$frac22x-720x-10\$\$

There"s a problem, the exactly answer is \$\$frac7-22x10-20x\$\$

This provides me want to cry, more so since I confirm it twice and I was an extremely careful around my working out, right here it is:

\$\$frac2+ 3(frac8x-31-x) 2(frac8x-31-x) -4 \$\$

\$\$ ightarrow\$\$

\$\$frac(frac2(1-x) + 3(8x-3)1-x)(frac-4(1-x)+2(8x-3)1-x)\$\$

\$\$ ightarrow\$\$

\$\$frac2(1-x) + 3(8x-3)1-x * frac1-x-4(1-x)+2(8x-3)\$\$

\$\$ ightarrow\$\$

\$\$frac22x-71-x * frac1-x20x-10\$\$

The \$(1-x)\$"s publication out\$\$ ightarrow\$\$

\$\$frac22x-720x-10\$\$

Can someone please tell me regarding what i did incorrectly in the process? give thanks to you in advance!

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request Mar 14 "14 in ~ 6:19

Meers E. ChahineMeers E. Chahine
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And the books "correct" answer is \$\$frac7-22x10-20x\$\$

Yes? an alert what happens as soon as you main point both the numerator and denominator in her answer through \$-1\$? You"re really welcome.

You are watching: Y in terms of x

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reply Mar 14 "14 in ~ 6:24

GuyGuy
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You got the exactly answer. Just multiply both numerator and denominator by -1

\$\$frac22x-720x-10 = frac-1-1 imes frac7-22x10-20x\$\$

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edited Sep 6 "17 in ~ 19:22
answered Mar 14 "14 at 6:24

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