Can someone please help me with this math problem.
2x-4y=8 I need to the make the problem so it is y=whatever.
Can someone please help me?
2006-12-19 11:49:17 · 16 answers · asked by ♥MZ. EASTSiDE♥ 1 in Education & Reference ➔ Homework Help
you have 2 variables or letters in your equation so if u want to get y = somethng then i think solve this way
substitude x as 2 ok?
so...
2*2 - 4y = 8
4-4y = 8
-4y = 12
y = -3
Hope i helped!
2006-12-19 11:52:59 · answer #1 · answered by Chocogal 7 · 0⤊ 1⤋
It sounds like you are trying to get it into the form y=mx+b.
add 4y to both sides and you have 2x = 4y + 8
subtract 8 from both sides and you have 4y = 2x - 8
divide both sides by 4 and you have y = 1/2x - 2
thus you have a straight line with a slope of 1/2 that pases through -2 when x is 0.
2006-12-19 11:55:36 · answer #2 · answered by Automation Wizard 6 · 0⤊ 0⤋
Okay, so we need to rearrange the order of this problem.
First of all, move the negative 4y to the other side of the equation by adding 4y to either side, as shown.
2x-4y(+4y)=8(+4y)
to give us:
2x = 8 + 4y
and now subtract 8 from either side, as shown.
2x (-8) = 8 (-8) + 4y
Now we have the equation:
2x - 8 = 4y
By rearranging the answer, we have:
4y = 2x - 8
and by dividing everything by 4:
4y (/4) = 2x (/4) - 8 (/4)
We can see that:
y = 0.5x - 2
2006-12-19 11:55:55 · answer #3 · answered by Jay Jay 2 · 0⤊ 0⤋
If you are solving for y, you will want to isolate y, so begin with your equation:
2x-4y = 8
Then add 4y to both sides,
2x = 8 + 4y
Move the eight to the left side of the equation (subtract 8 from both sides):
2x - 8 = 4y
Divide both sides by four:
(2x - 8)/4 = y
Now reduce fractions:
1/2x - 2 = y
2006-12-19 11:54:53 · answer #4 · answered by sarah1892af 1 · 1⤊ 0⤋
Since you want to solve for Y make X = 0
So
2*0 - 4y = 8
0 - 4y = 8
- 4y = 8
-4y/-4 = 8/-4
Y = -2
2006-12-19 11:52:48 · answer #5 · answered by Anonymous · 0⤊ 1⤋
2x -4 y = 8
-2x+4 = 8 -2x + 4
y = 12 - 2x
I think that should be it, or you could do this: i think.
2 +y = 12 - x
-2 +y = 12 - x - 2
y = 10 - x
2006-12-19 12:05:55 · answer #6 · answered by Anonymous · 0⤊ 0⤋
2x-4y=8
-2x -2x Subtract 2x to both sides.
-4y=8-2x
-4y/-4=8/-4-2x/-4 Divide them by -4
y=-2-1/2x
2006-12-19 11:51:42 · answer #7 · answered by i.heart.u 5 · 0⤊ 1⤋
flip 4y and 8 now you have 2x-8=4y
now divide 4 from both sides and you get 2/4x-2=y
tadaa ur answer
2/4x-2=y
2006-12-19 11:53:49 · answer #8 · answered by wllshtt 2 · 0⤊ 0⤋
subtract 2x from both sides
-4y=8-2x
divide by -4
y= -2+.5x
2006-12-19 11:51:24 · answer #9 · answered by Anonymous · 1⤊ 1⤋
y= -2 - x/2
2006-12-19 11:58:10 · answer #10 · answered by mimi 2 · 0⤊ 0⤋