Question

In a direct variation, y is negative four when x is 2. What is y when x equals negative fourteen?

A)-28

B)-7

C)7

D) 28

please help me..Explain!

Answer 1

ok well when u set up direct variation, you place either the x over the y or y over x

Answer 2

When two variables are related in such a way that the ratio of their values always remains the same, the two variables are said to be in direct variation.

Answer 3

in this case, im gonna put y over x

Answer 4

Yes so thats -4 over 2

Answer 5

so: -4/2= y/-14

Answer 6

we have the point (2,-4) so y=-2x

Answer 7

let x=-14 in that equation

Answer 8

you cross multiply, which would end up like: 56=2y

Answer 9

y=-2(-14)
=28

Answer 10

then divide by 2 and u have ur answer. I really hope this helps you! Good Luck :D

Answer 11

Thanks both for explaining it! I understand now!