Posted by Jordyn on Monday, October 11, 2010 at 7:17pm.
Please help!!!!
Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use setbuilder notation to write the solution set. If a system has no solution, state this.
6x  2y = 2,
9x  3y = 1
My answer:
Equation 1
Xintercept y=intercept
6x  2y = 2 6x  2y = 2
6x  2(0) = 2 6(0)  2y = 2
6x  0 = 2 0 2y = 2
6x = 2 2y = 2
6x/6 =2/6 2y/2 = 2/2
x= 0.75 y = 1
Equation 2
9x  3y = 1 9x  3y = 1
9x  3(0) = 1 9(0)  3y = 1
9x  0 = 1 0  3y = 1
9x = 1 3y = 1
9x/9 =1 3y/3 = 1/3
x= 1/9 y = 1/3
x= 0.9 y= 0.25

Math  drwls, Monday, October 11, 2010 at 8:07pm
It is not clear what you are doing. Rewrite the two equations as follows
18x  6y = 6
18x  6y = 2
The two equations are incompatible, and would graph as separate parallel lines.
There is no solution.

Math  alva, Monday, March 12, 2012 at 8:36pm
2x+7y=0
can someone help me plz :))
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