Saturday

April 19, 2014

April 19, 2014

Posted by **Rose** on Thursday, December 14, 2006 at 4:36pm.

x-4y=-21

3x+y=2

I got (0,2)

Try plugging in x=0 and y=2 into your first equiation and uopu will that your answer must be wrong.

Do it this way:

x - 4y =-21

12x+ 4y =8

13 x = -13

x = -1

y = 2 - 3x = ?

x=0 and y=2 does not satisfy the first equation.

(0)-4(2)=0-8=-8 but that isn't equal to -21.

**Related Questions**

Algebra - Solve the system of equations using substitution. x + 4y = -5 3x - 8y...

algebra - i need help with these problems (either a solution or how to plug them...

Algebra - -3x + 2y = 8 x + 4y = -4 use substitution method to solve the linear ...

algebra - use method of substitution to solve the system of linear equation 3x+...

algebra - Requesting help. (I must reckon, that X is a variable, and y is y-...

algebra 1 - how do you solve the following questions using the substitution ...

college - solve the system by the substitution method x=8-4y 3x=5y=3

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

Algebra Multiple choice revised!! HELP - I have a few questions I need help with...

Algebra - Solving system of linear equations by using the apropiate method name ...