Question

example of an equation in two variables with 0 solutions.

Answer 1

PLEASE HELP

Answer 2

um

Answer 3

2x+y=4x+2y+6

Answer 4

?

Answer 5

Haaha i really don't even know but thank yo, can you help me out with another one

Answer 6

wait

Answer 7

ill help u -.-

Answer 8

u know equation of lines

Answer 9

y=2x
y=2x+1
lets say these 2 equations of lines

Answer 10

okay

Answer 11

can u see the slopes of those 2 liens are the same

Answer 12

yea ?

Answer 13

okay these 2 lines have same slope but different y intercept so they will not intersect, which means no solution

Answer 14

you can form an equation with these 2 equations put together

Answer 15

ohhhhhhhh thats makes sense now

Answer 16

so how can i find an equation that has two variable but only one answer >

Answer 17

y=2x
y=2x+1
---------
y-2x=0
y-2x+1=0 ----> multiply this by 2 just for kicks

y-2x=0
2y-4x+2 =0
now equation the 2 zero expressions and we get
y-2x=2y-4x+2
here have have an equation which we know cannot be satisfied

Answer 18

okay so similiar to this, now u want to take any 2 lines with different slopes then u know these 2 lines will intersect

Answer 19

y=2x
y=3x

but lets rewrite this so we sustain the 2 variables

Y-2x=0
y-3x=0
now equation the 0 expressions

y-2x=y-3x

Answer 20

equate*

Answer 21

i dont get it ?
@dan815

Answer 22

okay u know 2 lines with different slopes always meet

Answer 23

yea

Answer 24

so take any 2 line equations with different slope

Answer 25

and theyll have the same answer ?

Answer 26

yeah but re arragen it so u still have the 2 variables

Answer 27

i was thinking uhh.. what grade are u in... have u learnt parabolas

Answer 28

im so confused

Answer 29

because u can do this with parabolas too