Question 1209403: solve the following systems of linear equation by graphing
1. x=y=6
xy=6
2.y=3x=5
x+y=9
3. y=8-3x
6x+2y=18
4. 2x+4y=12
6x+12y=36
Answer by ikleyn(52787)   (Show Source):
You can put this solution on YOUR website! .
Go to website www.desmos.com/calculator
It is free of charge plotting tool for common use.
For each system, print its equations in two lines in special window, using the keyboard.
You will get the lines. If the lines intersect, click on their intersection point
- then the plotter will give you its coordinates, that are the solutions to the system.
If the lines are parallel or the curves do not intersect, it means that the system has no solutions.
If two lines coincide, it means that the system has infinitely many solutions.
Alternatively, you may use your graphing calculator.
Generally speaking, this assignment is not of that class to post to the forum
and to ask the tutor to make your job.
First system of equations is written incorrectly.
Second system of equations is written incorrectly.
It is better to post lesser number of assignments, but written correctly,
than to post greater number of assignments, but written incorrectly.
Check your keyboard if it works properly.
In the future, NEVER post more than one problem/question per post.
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