Select all the correct answers. which of these relations are functions? a) y=5. b) x=-2. c) y=2x-5. d) 2y=x-4

Answer with Step-by-step explanation:

A function is a map from non empty set a to non empty set B such that corresponding to each element of A there exist unique image in B.

A) y=5

Corresponding to each x, there exist a unique element of each element which is 5

Hence, it is a function

B) x= -2

Corresponding to the point -2, there exist more than one image

Hence, it is not a function  

C) y=2x-5  

Corresponding to each x,the value of y is unique

Hence,it is a function

D) 2y=x-4

Corresponding to each x,the value of y is unique

Hence,it is a function

Hence, Correct options are:

A) y=5

C) y=2x-5  

D) 2y=x-4

i dont know i just need points

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: