What is the domain of this function
y= |x|

Domain = all real numbers

Step-by-step explanation:

If you were to visualize what is, it would be a giant V shape, it's middle point being at (0,0). Since this is counted as a function and there is no end to the V shape, the domain would be all real numbers.

But there is a chance that there is a type of notation that your teacher will most likely ask you for (sometimes not), like set notation, etc. But if not provided, you can simply go with R (R stands for all real numbers) or {-∞<x<∞}.

Hope this helps! ヾ(•ω•`)o

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

77

step-by-step explanation: