Question

is the ordered pair a solution of the given system of equations ? (5,-5),
4x+9y=-25
3x-y=10

Answer 1

I got 7=-25 and 9y=10 so it is a soltion of the system of equation

Answer 2

what did you get it

Answer 3

Solving the equations
A) 4x+9y=-25
B) 3x-y=10
Multiply B by 9 then add it to A
A) 4x+9y=-25
B) 27x -9y = 90
31x = 65
x = 65/31 = 2.4193548387
x = 2.0967741935
The ordered pair states that x=5 which cannot be true and so the ordered pair is not a solution.

Answer 4

I disagree with your answer
(5,-5), 4x+9y=-2 and 3x-y=10
3x-y=10 3(3)-y(-y)=10
9+y=10
4x+9y=-25 9y=10
4(3)+(-5)=-25
12-5=-24
7=-25

So correct me where I did mistake

Answer 5

Solving for y
4*2.0967741935 + 9y = -25
9y = -25 - 8.3870967742
9y = -33.3870967742
y = -33.3870967742 / 9
y = -3.7096774194

Answer 6

shakur,
Rather than plugging in the x and y values, I just solved for x and y.
I didn't say whether you were wrong or right.

Answer 7

Oh Okay I understand ,I just find it ,is not a solution