Question

Identify which table shows a direct variation.
Two tables. For each table the column headings are x and y. Table 1 has column 1 values 3, 4.5, 7 and column 2 values 7.5, 11.25, 17.5. Table 2 has column 1 values 1.5, 8, 13 and column 2 values 3, 12, 19.5.









A.
both tables







B.
Table 1 only







C.
Table 2 only







D.
neither table

Answer 1

@antanasia220

Answer 2

what do you think the answer is?

Answer 3

b

Answer 4

idk @ILovePuppiesLol @pooja195

Answer 5

@jabez177

Answer 6

@IshipDestiel

Answer 7

@Hero

Answer 8

The formula for direct variation is y = kx where k is the constant of variation.

Answer 9

im not sure

Answer 10

@Hero

Answer 11

What number can you multiply by 3 to get 7.5?

Answer 12

2.5 @Hero

Answer 13

Okay, check to see if multiplying 4.5 by 2.5 results in 11.25

Answer 14

4.5*2.5=11.25

Answer 15

@Hero

Answer 16

Now check the next row in the table.

Answer 17

7*2.5=17.5

Answer 18

So looks like if we divide y by x for Table 1, we get the same k value. What do you think?

Answer 19

Now see what happens if you try this technique for table 2.

Answer 20

1.5*2=3


but u cant get 8* something to get 12

Answer 21

@Hero

Answer 22

For table 1, if you divide y by x, you get a constant k.
For table 2, if you divide y by x, you don't get a constant k