y=3x+6 and y=4x?

Question

help me solve this..you gotta use substitution =]

Answer 1

y = 3x + 6 --- (1)
y = 4x --- (2)

Sub (1) into (2)
3x + 6 = 4x
x = 6

when x = 6, y = 4(6)
y = 24

Therefore, the solution set for this simultaneous equations are x = 6 and y = 24.

Answer 2

If Y = 4x then substituting 4x = 3x + 6
subtracting 3x from both sides leaves x = 6
therefore y = 4 times 6 or 24

Answer 3

y=3x+6
and
y=4x
substite the first y for the second y to get:
4x=3x+6
4x - 3x = 6
x = 6

y = 4x
y = 4(6)
y = 24

Answer 4

The two equations are

y = 3x + 6 and
y = 4x

We rewrite the second equation as

x = 4/y

Substituting this into the first equation, we get

y = 3(y/4) + 6

which can be rewritten as

y = 3y/4 + 6

Muliplying both sides by 4, we get

4y = 3y + 24

4y - 3y = 24

y = 24

Now that we know y, we can solve for x:

y = 4x

24 = 4x

6 = x

Therefore, x = 4 and y = 24.

Answer 5

if both of these equation equal y, then both equations equal each other.

lets substitute 4x for y.
y= 3x+6
4x=3x+6
subtract 3x from both sides
x=6

if x =6 and y=4x, multiply 4 * 6 for y to get y=24

Answer 6

just put 4x in the first equation for y
y = 3x + 6
4x = 3x + 6
x = 6
y = 4x
y = 4(6) = 24

Answer 7

4x = 3x + 6
x = 6

Answer 8

4x = 3x + 6
4x - 3x = 6
Hence, x = 6

y = 4x = 4(6) = 24
Hence, y = 24

Answer 9

looking at your equations set them equal to each other y =y so

4x = 3x + 6 (right) so x=6

Answer 10

x= 6

4x= 3x + 6
-3x -3x
x = 6