Question

Determine if each of the following are functions (a) y=x^2+1 (b) y^2=x+1

Answer 1

the first is a function but the second is not function why?? because that

Answer 2

when you plug any value for x in the domain yield exactly one value for y and we are talking about the first try that now ?

Answer 3

y=(1)^2+1

Answer 4

y=2

Answer 5

thats very good and try the same thing and you will got two value for y try it now

Answer 6

in the second

Answer 7

how

Answer 8

@majdishokri
Just a suggestion, try x = 0 instead, it's easier to visualise.