I need help with these 1. 4(-7)
2. -14(5)
3. 9(-12)
4. -6(-8)
5. 27(-3)
6. -11(-13)
7. -55(0)
8. (-7)(-7)
9. 78(-1)
10. (-3) 3
11. (-1) 4
12. (-8) 2
13. Find -5 cubed.
14. Find the product of 13 and -31.
15. 5(4)
16. 3(-1)
17. (-5)(8)
18. -7(4)(8)
19. (-5)(4)(-1)
20. -5(-1) 3
21. -(-5) 2 (4)
22. -4(8) - (-5)
23. (4) 2- 4(-5)(-1)

Step-by-step explanation:

are we solving this ?

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3