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How do I solve 2.-4=10 and x y =2 using graphing system, I do not understand what they want

Algebra
Tutor: None Selected Time limit: 1 Day

2x - 4y = 10

x+y = 2

I am very confused how do I solve each system by graphing

Mar 17th, 2015

For solving the problem graphically, we need to plot the graph of both the equation .. where ever these two line intersect each other become solution of the equations

so 2x-4y = 10   we can write x = 5-2y  

Now put y  = 0, 1, 2 ... & get values of x = 5,3,1 .... (respectively)

Similarly for  x + y = 2  we can write x = 2-y
Now put y  = 0, 1, 2 ... & get values of x = 2,1,0 .... (respectively) 

plot these point

These lines intersect at ( 3,-1) Hence x = 3 & y = -1   (Answer)

Please don't forget to choose as best to regard my efforts !!!

Mar 17th, 2015

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