Question

can someone please help me on my algebra hw???

Answer 1

throw the problem

Answer 2

yes...

Answer 3

ok, its solving special systems.

{y=2x-3
{y-2x=-3

the 2 brackets are really only one big on

Answer 4

ok what you will have to do to solve this problem is solve one of the equations for x or y

Answer 5

see if you can do that

Answer 6

im trying to but i cant

Answer 7

ok no problem. Lets take the first equation y = 2x + 3. this is great because y is already in terms of x

Answer 8

ok

Answer 9

so now do you know how to subsitute y = 2x + 3 into the second equation?

Answer 10

you have to get 2x and substitute it for the y in the second equation???

Answer 11

2x+3 i mean

Answer 12

hmm not sure what you mean there. Lets back up a little bit. What we want to do here is try to make an equation with just x or just y. We only want one varible because two varibles are difficult to work with

Answer 13

oh ok yes you are right!

Answer 14

ok then

Answer 15

try it out

Answer 16

oh its 2x-3 not plus 3

Answer 17

oh yes sorry i wrote 2x + 3

Answer 18

so its, 2x-3-2x=-3??

Answer 19

yes abosoutally! remember that y and 2x -3 are the same exact number. Sure they look different but they are completally the same

Answer 20

now solve for x :D

Answer 21

ok hold on

Answer 22

after i combine the like terms is it, 4x-3=-3?

Answer 23

hmmmm im sorry i didnt do the problem. Are you sure you copied it down right?

Answer 24

yup

Answer 25

notice this 2x - 3 -2x = -3
2x - 2x - 3 = -3
0-3 = -3

you cancel your x's :D

Your going to have to try solving for y

Answer 26

but whats x

Answer 27

hahaha ok ok im sorry i just was leading your along and i never looked at the problem completally. These two equations are the same. Do you see that?

Answer 28

no

Answer 29

solve the second equation in terms of x

Answer 30

yes but i need the x in order to figure out y

Answer 31

these two are the same :D
y = 2x -3
y - 2x = -3

Answer 32

You will not find a solution because you really only have one eqaution

Answer 33

so its a solution!!

Answer 34

or no solution

Answer 35

Yes well the solution is no solution :P

Answer 36

ok