Describe how to solve -5x = 30

x = -6

Step-by-step explanation:

solving for x in this equation, you would only need to divide the -5 on both sides.

-5x=30

divide both the x and 30 by -5:

x=-6

(make sure when dividing a negative by a positive the positive number ends up negative as well) :)

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

70 years.

step-by-step explanation: