Question 60775: can you help me re-write Rewrite this equation 2x – 9y = –72 as a function of
Found 2 solutions by mszlmb, praseena:
Answer by mszlmb(115)   (Show Source):
You can put this solution on YOUR website! Yea yea,
2x–9y=–72 minus 2x on both sides
-9y=-72-2x divide both sides by -9
y=8+2/9x
Yea, these problems look harder than they really are; "solve for" usually means "isolate on one side". so like for y+c=w+32l, to isolate c you just do minus y on both sides and get c=w+32l-y; see, simple..
So IM or email me if you have any questions.
Answer by praseena(37)  (Show Source):
You can put this solution on YOUR website!
your question is not complete.
can you help me re-write Rewrite this equation 2x – 9y = –72 as a function of
============================================================
if you want to rewrite the equation as a function of x , the solution is like this;
2x - 9y = -72
retain the x term in the left side and bring all the other terms to the other side.
==> 2x = -72 + 9y
now multiply the whole expression by 2
==>2x/2 = -72/2 + 9y/2
==> x = -36 + (9y)/2
this is a function of x.
==============================================================================
If your question is re write the equation in terms of y, then the solution is
2x – 9y = –72
retain the y term in the left side and bring the other term to the other side
or here we can transpose the terms ike,
2x+72 = 9y {bring 9y to the right side at the same time bring -72 to the other side . Remember the sign of the term will change.)
now divide both sides of the equal sign by 9 { because 9y means 9* y and the multiplication operation will become division when it moves to the other side.}
thus we have, (2x)/9 + 72/9 = y
==> y = (2x)/9 + 72/9, which is a function of y
|
|
|
