Domain is always and reads
range is always and reads

Domain: The set of possible input values to a function

Range: The set of possible output values of a function

Step-by-step explanation:

The domain of a function is the complete set of possible values of the independent variable

The Range is the difference between the lowest and highest values

Step-by-step explanation:

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

2.83941151 would be the answer you're looking for! : )