Question

Which set of points represents a function? Explain your solution.

a. (7,1), (1,2), (5,3), (7,3), (6,3)

b. (1,7), (6,1), (7,3), (4,9), (6,3)

c. (2,1), (2,4), (5,3), (4,9), (6,3)

d. (1,7), (2,1), (5,3), (4,9), (6,3)

Answer 1

the one with no repetition in the first coordiate

Answer 2

so its A?

Answer 3

Not it wouldn't be A....as satellite has said...the 'x' coordinate cannot be repeated at all in each set of points...

In A we have

(7,1), (1,2), (5,3), (7,3), (6,3)
(x,y), (x,y), (x,y), (x,y), (x,y),

so all the 'x' values we have are 7 , 1 , 5 , 7 , 6

Notice how we have two 7's here....this is not allowed...and it means that it does NOT represent a function....which on does...?

Answer 4

D

Answer 5

?

Answer 6

Right D! Good job!

Answer 7

thank you haha love it! :)

Answer 8

No problem lol anytime! :)