Which relation is a function?
a.
{(8, –1), (2, –1), (3, 8), (2, 5}
b.
{(7, 12), (1, –5), (3, –10), (2, –5)}
c.
{(–3, 4), (–2, 5), (0, 9), (0, 12)}
d.
{(1, 2), (1, 5), (1, –1), (1, 4)}

2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

step-by-step explanation:

. your answer will contain x - and y -terms. (1 point) x ( ¿¿ 2 − 7 ) 2 +( y 2 − 9 ) 2 √ ¿ 12. what is the distance from the directrix (the crocodile river) to the point ( x , y )? write this equation. your answer will contain a y -term.