Homework Help: math

Posted by Janna on Wednesday, August 8, 2007 at 1:38am.

Not sure about this...

Need to solve by substitution

8x - 4y = 16
y = 2x -4

Substitute 2x -4 for y in the first equation and solve the resulting equation for x.
8x - 4(2x-4) = 16
16 = 16
The two equations are not independent. One can be derived fron the other. There are an infinite number of solutions

No one has answered this question yet.

Answer this Question

Related Questions

algebra - solve the following using substitution 8x-4y=16 y=2x-4 8x-4(2x-4)=16 ...
substitution method - -x-4y=-14 2x=y+1 Let's look at your two equations. -x...
math/algebra - solve each of the following systems by substitution. 16) 5x -2y...
math - Solve this system 8x-4y=16 , y=2x-4 by substitution
algebra - Solve by substitution: 8x - 4y =16 y=2x -4
Algebra - How to solve by substitution: 8x - 4y = 16 y = 2x - 4
math 30 - Help please i need to write 4x^2 -y^2 -8x -4y +16 =0 in standard form....
How do I do this.?(Math.) - Use the Substitution method to solve the system of ...
Algebra - How do I solve the following by substitution: 5x -2y =-5 y - 5x = 3 8x...
math - if (2x-3):(y+4)=k where k is a constant and x=4 when y=2 then find x when...

For Further Reading

First Name:
School Subject:
Answer: