Question

Choose a variable to isolate and what it is equal to in the system of equations below.
3x=y+8
2y=4x-3
a.y=3x+8
b.2y=4x-3
c.y=3x-8
d.3y=x-8

Answer 1

First step: solve either 3x=y+8 or 2y=4x-3 for one variable
Which one would you like to solve for?

Answer 2

2y=4x-3 please

Answer 3

Ok, do you want to try solving that for y?

Answer 4

yes:)

Answer 5

K :) let me know what you get

Answer 6

i got 6 and 8. i think its wrong

Answer 7

Ok, you're solving 2y=4x-3 for y, right? We won't be able to get a numerical answer because there are two unknowns here, so we can only solve for it in terms of x. Right now y is being multiplied by 2, so in order to undo the multiplication, we have to divide both sides of the equation by 2.

y=4/2x-3/2
or y=2x-3/2

Answer 8

i think its y=2x-3/2
if you divide 3 by 2 you get 1.5

Answer 9

Right. I'm a little confused by the question, is it for online math homework? I just noticed that one of your options (b) is the same as one of the equations that they give you.

Answer 10

yes its online homework. thanks friend =)

Answer 11

My pleasure, do you think you can get the final answer from here?

Answer 12

umm idk but im gonna go for b:)

Answer 13

b might work because it's identical to one of the original equations. There's another choice that might work too. If you solve the top equation (3x=y+8) for y, you get y=3x-8, which is (c)

Answer 14

Thanks Again Friend =)

Answer 15

You're welcome, good luck :)