Choose the correct graph of the given system of equations.

y − 2x = −1
x + 3y = 4

Question

Choose the correct graph of the given system of equations.

y − 2x = −1
x + 3y = 4

anonymous · Answer

graph of two lines, one with a positive slope and one with a negative slope, that intersect at the point (negative 1, 1)

anonymous · Answer

http://learn.flvs.net/webdav/assessment_images/educator_algebraI_v20/06_01_09b.gif

anonymous · Answer

http://learn.flvs.net/webdav/assessment_images/educator_algebraI_v20/06_01_09b.gif

zzr0ck3r · Answer

$y-2x=-1$
$x+3y=4$

Multiply the second one by $2$ and we get 

$y-2x=-1$
$2x+6y=8$

now add them together

$7y=7$ so that $y=1$ and now we find $x$.

$x+3(1)=4\implies x=1$

zzr0ck3r · Answer

$(-1,1)$ is not their intersection. Make sense?

anonymous · Answer

give me a moment please

zzr0ck3r · Answer

no rush m8

anonymous · Answer

so its either the second or third one

triciaal · Answer

at the intersection the (x, y) given (-1, 1) satisfies both equations

zzr0ck3r · Answer

$1-2(-1)\ne -1$

zzr0ck3r · Answer

$(-1,1)$ Does NOT satisfy either equation @triciaal

triciaal · Answer

graph of two lines, one with a positive slope and one with a negative slope, that intersect at the point (negative 1, 1)

I misunderstood then so is the question incomplete?

anonymous · Answer

Choose the correct graph of the given system of equations.

y − 2x = −1
x + 3y = 4

zzr0ck3r · Answer

I think those are his answers :)

anonymous · Answer

i chose http://learn.flvs.net/webdav/assessment_images/educator_algebraI_v20/06_01_09b.gif

anonymous · Answer

is it correct

triciaal · Answer

@GiulianaRestrepo we can't see your choices.

the solution is the graph where the (x, y) satisfies both equation

anonymous · Answer

http://learn.flvs.net/webdav/assessment_images/educator_algebraI_v20/06_01_09b.gif

anonymous · Answer

@triciaal

triciaal · Answer

sketch each graph on the same grid and find the point where they meet

triciaal · Answer

the first equation   y = 2x -1   hint  slope 2 and point (0, -1) is on that line 

the 2nd eqn   3y = -x + 4   slope negative  and when y = 0 x = 4  so (4, 0) is on that line 

can you sketch each line and find (x, y) where they meet?

anonymous · Answer

i already solved it thanks
!

triciaal · Answer

ok close the question.