Question

PLEASE HELP ME



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Answer 1

do u know what defines a relation and a function

Answer 2

can you explain it to me

Answer 3

ya
so like a relation is basically just a set of values that are mapped to other values like this

(1, 2), (2, 3), (3, 4)
e.g., 1 corresponds to 2
2 corresponds to 3
3 corresponds to 4
in general we use points to describe these things

Answer 4

ok

Answer 5

a function is a special type of relation where there's only one output value that corresponds to a single input
{(1,2), (2,3), (3,4)} is a function bc 1, 2 and 3 are all different
if we had something like this
{1,2}, (2,3), (2, 4), (3,4)}
that wouldn't be a function, because there are two values with '2' in the x-value (or the input)

Answer 6

so basically on a graph if any two points have the same x-axis in a relation then it isn't a function

Answer 7

or, in other words, if two or more points are vertically aligned, then it's not a function

Answer 8

this is not a function because it has two points vertically aligned
so u have to find the one that doesnt have any points vertically aligned

Answer 9

so b or d

Answer 10

b has two sets of points that are vertically aligned

Answer 11

B ok thank you @bloopman