SOLUTION: solve by graphing 2x+y=4 x+y=3

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Question 56681: solve by graphing
2x+y=4
x+y=3
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
solve by graphing
L1) 2x+y=4
L2) x+y=3
:
For L1)
Let x=0 and solve for y, this is the y-intercept:
2(0)+y=4
y=4
Plot (0,4)
Let y=0 and solve for x, this is the x-intercept:
2x+(0)=4
2x=4
2x/2=4/2
x=2
Plot (2,0)
Coonect the dots and you have a line that looks like:
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C-2x%2B4%29
For L2)
Let x=0 and solve for y, this is you y-intercept:
(0)+y=3
y=3
Plot (0,3)
Let y=0 and solve for x, this is your x-intercept:
x+(0)=3
x=3
Plot (3,0)
Connect the dots and you have a second line:
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C-2x%2B4%2C-x%2B3%29
They intersect at (1,2), that's the solution to the system.
Happy Calculating!!!