Question

Tell whether the equation -4x + 2y = -2 represents a direct variation. If so, identify the constant of variation.

Direct variation; k = ½
Direct variation; k = 2
Direct variation; k = -2
Not a direct variation

Answer 1

@imqwerty

Answer 2

@Nnesha

Answer 3

@Ddos_Dragon

Answer 4

what's the general equation for direct variation ?

Answer 5

Hmmm... I dunno.

Answer 6

\[\frac{ y }{ x } = k\] ?

Answer 7

i helped you yesterday
i asked same question.. :P

Answer 8

that's correct but you should write it as `y=kx`

Answer 9

where k is the constant of variation
now solve the given equation for y

Answer 10

the direct variation equation is in y= form
so you should solve the original equation for

Answer 11

for y*

Answer 12

-4x + 2y = -2
-4 / -4x + 2y = -2 / -4
x + 2y = 0.5
x + 2 / 2y = 0.5 /2
x + y = 0.25
?

Answer 13

I'm unsure if I did what you asked for.

Answer 14

hmm good job for trying :=))
but hmm sorry that's wrong you
\[\huge\rm -4x+2y=-2\] in order to solve for y first you should move the x term to the right side (not just the coefficient *x term* whihc is -4x)

Answer 15

So.. to do that we'd need to add a -4 and a x to cancel them out on the left side?
2y = -2 + -4/x ?

Answer 16

add -4x both side
remember this is one term `-4x`

Answer 17

you can't add -2 with 4x they are not like terms
so just leave 4x at right side