Question

y=-4x+2
y=-3x+1
im looking for the plotted points ( , )

Answer 1

@satellite73

Answer 2

I think you need to separate the x and solve for y? I think and vise versa

Answer 3

when you have two equations like that, you are going to need to solve for the intersection of both equations

Answer 4

Solve for y and x intercepts, to graph it fast ;P

Answer 5

:o but how would I know where to graph them?

Answer 6

my teacher said the anwser to this one is (1,-2) but I don't really understand how he figured that out.

Answer 7

don't you know how to graph linear equations?
you don't even need to graph it really, you can solve it analytically

use substitution or elimination method

Answer 8

oooh kk

Answer 9

i think i got it

Answer 10

do you know how to do that?

Answer 11

yeah

Answer 12

okay, work out your solution on a paper then show it here so I can check if you did it right

Answer 13

ok

Answer 14

-4x+2-3x+1
+3 +3
-1+2+1
x=2

Answer 15

what are you doing?

Answer 16

isn't that how you do it?... im dumb. Should I just ask my teacher for help in the morning

Answer 17

that is not how you do it
if you're trying to use the elimination method you will have to solve either the x or y first and in order for you to do that you will have to do the following:

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

multiply -1 to the first equation so you can eliminate the y first
(1) \((y = -4x + 2 ) \times -1\)
(2) \(y= -3x+1 \)

this becomes:
(1) \(-y = +4x - 2 \)
(2) \(y= -3x+1 \)

solve this one for me

Answer 18

There's many ways to graph it, you can just use y =mx+b where m is the slope and b is the y intercept (where the line crosses the y - axis)...or you can solve for the intercepts then connect the dots...
To find intercepts, for each equation, to find x intercept set y = 0 and solve for x, to find y - intercept set each equation x = 0 and solve for y.

Answer 19

so im solving y=-3x+1 so its (y=-3x+1)x-1

Answer 20

no

Answer 21

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

SOLVE for this one first

Answer 22

I'm not understanding. Thanks for trying to help ninc and batman. I'm just gonna go back to graphing it then just putting down where they interesect. It's easier for me that way.

Answer 23

Nins weird, I hate his way

Answer 24

you are doing more work by doing that way, and you won't be able to figure out the intersection right away

Answer 25

elimination is so gross

Answer 26

At least i'll figure it out and be able to turn my homework in tomorrow morning XD

Answer 27

all I am asking you to do is SOLVE the 2 equations I set up for you
it only involves subtraction

Answer 28

do you know how to subtract?

Answer 29

1x + 1

Answer 30

can you show AN equation
where is the equal sign?

Answer 31

Haha, well basically what you have to do is add the equations that's why nin multiplied by - 1

Answer 32

so the y cancels out and you can solve for x

Answer 33

OH!

Answer 34

4x - 3x = 1x
2- 1 = 1