1. What are the four orders of operations

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

Step-by-step explanation:

PEMDAS works in order so first you look for parenthesis, if there are none then you move onto exponents. For multiplying and diving you move from left to right. Same applies for adding and subtracting.

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

i really dont know

step-by-step explanation: