Question

Please answer this I will give as many points as you want but I’m failing this class so I need this text to bring it up

Answer 1

`\textsf{The correct answer is the third one (below the one that you selected).}`

Step-by-step explanation:

`\sf\\\textsf{In first option, when x = 2, y = 1 and -1. There are two y-values for one x-value}\\\textsf{so this is not a function.}`

`\textsf{In second option, there are infinite y-values for x = 3. So this is also not a}\\\textsf{function.}`

`\sf\\\textsf{In the third option, there are unique y-values for every values of x. Hence this is}\\\textsf{a function. Actually, the function shown here is a cubic function }y=x^3.`

`\textsf{In the last option, x = 1, y = 2, -2. Here also exists two y-values for a single x}\\\textsf{value. So this is also not a function.}`