Question

which of the following has the graph of functions? :)
a. x^2-y^2=1 b.x+y^2=1 c.x^2+y^2=9 d. x^2=y-9

Answer 1

The last one.

Answer 2

why?

Answer 3

Because it the only one that give you one value of y for a given value of x

Answer 4

The others gives you more than one

Answer 5

because we cannt have more than one values of y for a single value of x ..

Answer 6

can i ask another question? :( im really having a hard time with trigo :(

Answer 7

Please answer this for me :( plssss :(