Question

Determine if the relation is a function.
{(-5, 5), (-6, 7), (-7, 7), (-8, 0)}
A. function
B. not a function
not a fun ction?

Answer 1

Hint* it cannot have 2 of the same 'x' coordinates in any given ordered pair..

if it did...say (2,4)(2,5) it would not pass the vertical line test because



So do any of your coordinates have the same 'x' value?

Answer 2

\[\large (\color \red{-5}, 5), (\color \red{-6}, 7), (\color \red{-7}, 7), (\color \red{-8}, 0)\]

Are any of those the same?

if so...then not a function
if not...then it is a function

Answer 3

its not function

Answer 4

...Yes it is...if I were to graph this it would be



There is no point in that graph where you can draw a vertical line and have it hit 2 points....that "by the vertical line test" proves that this relation is INDEED a function