Find the domain of the function expressed by the formula: a y=x^(2)+8 b y= (1)/(x) −7 c y= (2)/(3) +x d y=4x−0.2

Question

Find the domain of the function expressed by the formula:

a
y=
`x^(2)`+8
b
y=
`(1)/(x)` −7
c
y=
`(2)/(3)` +x
d
y=4x−0.2

Answer 1

a. Domain - x= all real numbers

b. Domain - x= all real numbers except 0

c. Domain - x= all real numbers

d. Domain - x= All real numbers

Explanation:

The domain of a function is all the possible x values. It is easy to solve for domain by graphing the function.

a graph - blue

b graph - red

c graph - green

d graph - purple