SOLUTION: Solve each of the following systems by substitution 8x -4y = 16 y = 2x-4

Algebra.Com
Question 75601: Solve each of the following systems by substitution
8x -4y = 16
y = 2x-4


Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Plug the 2nd equation into y of the 1st equation



Since this is true for all x, there are an infinite number of solutions. If you solve the 1st equation for y you get:




Which is the same as the 2nd equation. Since they are the same, they intersect at an infinite number of points.

RELATED QUESTIONS

Solve each of the following systems by substitution. 8x – 4y = 16 Y = 2x –... (answered by fractalier)
Solve each of the following systems by substitution 8x - 4y =16 y = 2x - 4 (answered by Earlsdon)
Solve each of the following systems by substitution. 8x - 4y = 16 y = 2x -... (answered by bucky)
solve each of the following systems by substitution: 8x-4y=16... (answered by Earlsdon)
Solve each of the following systems by substitution. 8x-4y=16... (answered by HyperBrain)
Solve each of the following systems by substitution. 8x-4y=16... (answered by jim_thompson5910)
Solve each of the following systems by substitution. 10. 8x – 4y = 16... (answered by jim_thompson5910)
Solve each of the following systems by substitution. 8x - 4y = 16 y = 2x -... (answered by praseenakos@yahoo.com)
Solve each of the following systems by substitution. 8x-4y=16 y=2x-4 4x-12y=5... (answered by jim_thompson5910)