Friday

July 25, 2014

July 25, 2014

Posted by **Anonymous** on Wednesday, January 19, 2011 at 7:53pm.

Does this system of linear equation have a solution of (-3,4)?

2x-3 = 6

y = 3x-13

Do u just substitute the numbers or something?

- MATH ALGEBRA -
**Reiny**, Wednesday, January 19, 2011 at 8:04pmYes, just substitute in both equations

1st:

Left Side = 2x-3 = 2(-3) - 3 = -9

but RS = 6, so the values don't even work in the first equation, you can stop here

(-3,4) is NOT a solution

I have a feeling that your first equation should have been

2x - 3y = 6

in that case:

LS - 2(-3) - 3(4) = -6

RS = +6

No point even trying the second

So no good either.

- MATH ALGEBRA -
**Anonymous**, Wednesday, January 19, 2011 at 8:06pmYes, sorry Reiny I had forgotton the Y. And thanks for the explanation:)

**Related Questions**

Grade 10 Math - Write an equation that forms a system of equations with x + y = ...

Algebra 1 - What is an equation of a line perpendicular to the line with ...

Algebra - Show equation AX=B represents a linear system of two equations in two ...

math - ahhhhhh...i cant seem to figure out how you graph an equation(linear) a ...

drwls, is this correct,math - drawls this is from the previous post is this ...

algebra - solve the system by graphing x+y=4 y=2x+1 I think these are the kind ...

Algebra ?? - What would be the missing piece of information given the following ...

Linear Algebra - Hello ! i try to solve Linear algebra 2 questions(but need them...

math 20 system of equations - I have been solving system of equations ...

Math Help! Ms. Sue! Damon! Steve! - I have tried doing these and I can't figure...