It is given that y is directly proportional tox. What is the constant of variation?
y
1
-4
2
-8
3
- 12
4
-16
5
-20
intro
Done

k = - 4

Step-by-step explanation:

The equation that represents direct proportion is

y = kx ← k is the constant of proportion

To find k use any ordered pair from the table.

Using (2, - 8 ) , then

- 8 = 2k ( divide both sides by 2 )

k = - 4

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

send it over

step-by-step explanation: