SOLUTION: How do you solve systems by graphing... for example (2x+2y=5 & y=x-4)What would the steps be to solving this (or any) problem.

Question 279699: How do you solve systems by graphing... for example (2x+2y=5 & y=x-4)What would the steps be to solving this (or any) problem.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
How do you solve systems by graphing... for example (2x+2y=5 & y=x-4)What would the steps be to solving this (or any) problem.
------------------
These are straight lines (linear equations) so 2 points each is sufficient.
2x + 2y = 5
Pick 2 values for x and find y, or vice versa
x...y
0...5/2 --> (0,5/2)
4...-3/2 --> (4,-3/2)
Plot the 2 points, draw a line thru them.
-----------------
Do the same for the other equation.
Where they cross is the solution.
The intersection is the pair (x and y) that fit both equations.

RELATED QUESTIONS
Solving Systems by Graphing and Substitution How would you solve this problem by... (answered by dabanfield)

Hi my name is Caroline, I have a question on solving systems by substitution. How do I... (answered by ewatrrr)

This is a systems of equations problem and I need to solve for x,y,z. I do not how to... (answered by venugopalramana)

What is the process for solving systems of equations by substitution? Example: -5x + y = (answered by ReadingBoosters,checkley79)

y=-x+5 y=2x-4 This is the problem I have to do. Can you use any method for solving... (answered by jim_thompson5910)

y=-x+5 y=2x-4 This is the problem I have to do. Can you use any method for solving... (answered by reviewermath,MathTherapy)

how do you solve the following systems by graphing 2x-y=4 and... (answered by papiochik07)

Solving Systems by Graphing and Substitution How would you solve this problem by... (answered by Alan3354)

Using Substitution 4x + 2y = 1 2x + 3y = .70 Solving for X in the first problem 4x... (answered by Fombitz)