In the following equations, let x=−3 and y=2/3. determine whether the following equations are true, false, or neither true nor false.
7. xy =−2
8. x+3y=−1
9. x+z=4
10. 9y=−2xx
11. y/x=−2

(7) True

(8) true

(9) Neither true nor false

(10) False

(11) False

Step-by-step explanation:

We have given x = -3 and

We have to find that the expression given bellow is true or false

(7) xy= -2

So

Hence it is true

(8)

Hence it is true

(9) x+z = 4

We have not given value of z so we can say that it is true or false

So it is neither true nor false

(10)

So

Hence it is not true

(11)

Hence it is false