Tell whether the relation is a direct variation. Explain. х
-9
-1
5
у
90
10
-50
This is not a direct variation, because it cannot be written in the form y = kx

This is a direct variation, because it can be written as xy = -10
where k = 0.

This is a direct variation, because it can be written as y=-1/10x, where k=-1/10

This is a direct variation, because it can be written as y = -10x
where k = -10.

This cannot be determined

Please help me out this is a important question

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Tell whether the two rates form a proportion

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −