Question

suppose y varies directly with x. if y = -12 when x = - 4, find y when x = 24

Answer 1

Please help

Answer 2

Write down the relations that are given in the question. We know that y varies with x. Hence, y = kx, where k is any constant. Can you find the value of this 'k', given the values of x and y?

Answer 3

a. 1/8
b. -1/8
c.-8
d. 8

Answer 4

k would be half of 12 right? so 6

Answer 5

Oops got that last line wrong, x = ky. Now when y = -12, x is -4. So find k.

Answer 6

k would be 48? 12 (4)?

Answer 7

No no. -4 = k(-12). So K is?

Answer 8

3 x -4? right ? so k is 3

Answer 9

Exactly. Now when x = 24, y will be what?

Answer 10

I guessing 8

Answer 11

Correct! That is your answer.

Answer 12

thnak you

Answer 13

Welcome. :-)