Question

What is the direct variation equation if y varies directly with x and
y = –5 when x = –15?

A.y=-10x


B.y=-3x


C.y=3x


D.y=1/3x

Answer 1

\[\huge\rm y = kx \] equation for direct variation
replace x and y by their values then solve for k

Answer 2

and that if y=kx then solve what

Answer 3

given is x and y values so you have to solve for k

Answer 4

replace x and y by their values so then solve for k

Answer 5

mitilply right

Answer 6

it depends on k if number is multiplying by k then to solve for k you should divide

Answer 7

so it's d. y=1/3x

Answer 8

yes

Answer 9

so d

Answer 10

:-)

Answer 11

yes or no in a nice way

Answer 12

:-) = that's right
isn't a nice way