Question

Is (8, -1) a solution of the system, 2x + 3y = 13 and x - y = 9? (Points : 1)
yes
no

2. Is (-2, -5) a solution of the system, 3x + 2y = 4 and 2x - 5y = -29? (Points : 1)
yes
no

3. Graph the two equations to solve the system. What is the ordered pair solution?
x + y = 6 and x - y = 4

(Points : 1)
(4, 2)
(6, 2)
(5, 1)
no solution

4. Graph the two equations to solve the system. What is the solution?
1/2 x - 2y = 4 and 4y - x = -8

(Points : 1)
(-2, 0)
no solution
(3, 4)
infinitely many solutio

Answer 1

1) yes
2) no -- it is (-2, 5)
3. (5,1) Graph at link: http://www.wolframalpha.com/input/?i=%28x+%2B+y+%3D+6%29+and+%28x+-+y+%3D+4%29

4. infinitely many solutions - graphs coincide. See graphs at link:
http://www.wolframalpha.com/input/?i=%28%281%2F2%29+x+-+2y+%3D+4%29+and+%284y+-+x+%3D+-8%29

Answer 2

@ alexanthony509 -- For quicker help, post questions separately - 4 different posts for 4 different problems. :)

Answer 3

thank u so much can u answer my other questions

Answer 4

I'll try. Let me see if I can find it.