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Question 26428: i need help in this problems
find three solutuions of each equation.
1)3x-y=6
2)5x+7y=19
make a table of solutions and graph each equation.
y=x
y=-2x
y=x+1
y=2x+1
y=-3x-1
thank you very much
Answer by elima(1433)   (Show Source):
You can put this solution on YOUR website! Sorry we did not get to your problem til today, hope this helps!
For each eqution you are going make a table choosing values for x and solving the eqution for y;
1)3x-y=6
x|y
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1|
2|
0|
So when x=1;
3(1)-y=6
3-y=6
-y=6-3
-y=3
y=-3
One solution; (1,-3)
When x=2;
3(2)-y=6
6-y=6
-y=6-6
y=0
2nd solution; (2,0)
When x=0;
3(0)-y=6
o-y=6
-y=6-0
-y=6
y=-6
3rd so;ution;(0,-6)
Now see if you can do the next one; for the next problems ,you will do the same thing, but then you graph them;
y=x
x|y
---
1|
2|
0|
when x=1;
y=(1)
First point (1,1)
when x=2;
y=(2)
2nd point; (2,2)
when x=0;
y=(0)
3rd point (0,0)
Now graph;
Now see if you can graph the others, if you have problems let me know
=)
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