if it is a function, no two pairs have the same first element.
So, ...
{(-8,-6),(-5,2),(-8,1),(7,3)}
Is this relation a function?
2 answers
A function crosses a vertical line only once.
Your relation crosses a vertical line twice:(-8,-6), and (-8,1). The x-coordinate shows twice; that is the clue.
Therefore, it is not a function.
Your relation crosses a vertical line twice:(-8,-6), and (-8,1). The x-coordinate shows twice; that is the clue.
Therefore, it is not a function.
1 answer