SOLUTION: I am having difficulties solve the following problem, can someone please help me? Thank you Solve A) symbolically B) graphically, and C) numerically. 8x+4y=8 -8x+2y=8

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am having difficulties solve the following problem, can someone please help me? Thank you Solve A) symbolically B) graphically, and C) numerically. 8x+4y=8 -8x+2y=8       Log On


   



Question 446205: I am having difficulties solve the following problem, can someone please help me? Thank you
Solve A) symbolically B) graphically, and C) numerically.
8x+4y=8
-8x+2y=8

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve
A) symbolically .
8x+4y=8
-8x+2y=8
-----
Add the 2 equations to get:
6y = 16
y = 8/3
---
Solve for "x":
8x+4y = 8
2x+y = 2
2x + (8/3) = 2
2x = 2- (8/3)
2x = -2/3
x = -1/3
===================
B) graphically
8x+4y=8
-8x+2y=8
-------------
Solve both for "y":
y = -2x+2
y = 4x+4
----
graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C-2x%2B2%2C4x%2B4%29
================================================
C) numerically
How is that any different from you A problem?
Cheers,
Stan H.