SOLUTION: 4x-y=9, x-3y=16...solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set-builder notation to write the solution set

Question 592506: 4x-y=9, x-3y=16...solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set-builder notation to write the solution set. If system has no solution, state this.
This is what I have......
4x-y=9, x-3y=16
4x-y=9
4x-y+y=9+y
4x=9+y
4x/4=y+9/4
x=y+9/4
x-3y=16
x-x-3y=16-x
3y=16-x
3y/3=16-x/3
y=16-x/3
y=x-16/3
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
4 x -1 y = 9 .............1
1 x -3 y = 16 .............2
Find the x & y intercept points by plugging x=0,y=0 in both equations.
equation I
when x= 0, y= -9 ,( 0 , -9 )
when y = 0, x= 9 ,( 9 , 0 )
Equation 2
when x= 0, y= -5.33 ( 0 , -5.33 )
when y = 0, x= 16 ( 16 , 0 )

The solution is (1,-5)

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