Question

write an apropriate direct variation equation if y=30 when x=-10

A. y=-300x
B. y=300x
C. y=-3x
D. y=3x

Answer 1

C) y = -3(-10) = 30

Answer 2

OK. the general form of direct varaiation is:
\(y=kx\) They are giving you the y and the x and asking you to solve for k.

Answer 3

@blurbendy their id no 30

Answer 4

i just put -10 in for x in C
y = -3x

Answer 5

Ignore the =30 part of his answer. He showed how it related back to the problem.

Answer 6

and if you do that, you get 30

Answer 7

oh alright:)