In which table(s) does y vary directly with x? Check all that apply.
x
1
y
3
RIIT
y
-2
y
-
10
0 -1
9
y
-2 2
-
11
2 -2
5
-1
18
1
21
| 3
-3

Respuesta :

Explanation:

Hello! It's hard to understand your tables, so I could help you in a general way. Remember you have to write clear questions in order to get good and exact answers.

When we say that [tex]y[/tex] varies directly as [tex]x[/tex] or [tex]y[/tex] is directly proportional to [tex]x[/tex], we say that [tex]y[/tex] can be written in terms of [tex]x[/tex] as the following form:

[tex]y=kx[/tex]

Where [tex]k[/tex] is the constant of variation or the constant of proportionality.

[tex]y=kx \\ \\ \\ \text{For some nonzero constant k} \\ \\ \text{Where k is the constant of variation or the constant of proportionality}[/tex]

So this is a line that passes through the origin. So we can establish a table as follows:

[tex]Suppose \ k=3 \ then: \\ \\ \\ y=3x \\ \\ \\ TABLE: \\ \\ \begin{array}{cc}x & y\\0 & 0\\1 & 3\\2 & 6\\3 & 9\end{array}[/tex]

Answer:

a b and c

Step-by-step explanation: