Solve the system of equations.
1) X + y = 5
2x - y = 7
2) 3x+y=7
-7-5y=25

1) x = 6, y = - 1

2) x = 4.4667, y = -6.4

Step-by-step explanation:

1)

x + y = 5

2x - y = 7

First, let's solve for x using the first equation.

x + y = 5

x = -y + 5

Next, let's substitute the x value into the second equation.

2x - y = 7

2(-y + 5) - y = 7

-2y + 10 - y = 7

-2y - y + 10 = 7

-3y = -3

y = -1

Now, let's substitute y into the first equation.

x + y = 5

x + (-1) = 5

x = 6

Therefore, x = 6, y = -1

2) 3x + y = 7

-7 - 5y = 25

First, let's solve for y in the second equation.

-7 - 5y = 25

-5y = 32

y = -6.4 or y = -6 or y = -

Next, let's substitute the y value into the second equation.

3x + y = 7

3x +(-6.4) = 7

3x = 13.4

x = 4.4667 (answer is rounded) or x = 4 or x =

Therefore, x = 4.4667, y = -6.4

Hope this helped <3

the 4th choice is the correct one

step-by-step explanation:

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval