22. State the domain of the function y=3x+2

Question

a. D: Real numbers
b. D: x not equal to 0
c. D: x < 0

A?

23. State the range of the function y=2x^2
a. R: y greater than or equal to 0
b. R: x not equal to 0
c. R: y < 0

I'm not sure?

24. Is y=sqrt2x a function?
a. Sometimes
b. Yes
c. No

B?

25. Is y=3x^2-2 a function?
a. No
b. Yes
c. Sometimes

A?

43. State the domain of the function y=3/x
a. D: x not equal to 0
b. D: x < 0
c. D: all real numbers

A?

Thanks

Answer 1

23. y ≥ 0

25 y = 3x^2 - 2 is definitely a function