Question

for the equation -4y = 8, what is the constant of variation?

-4
-2
1
2
i think its 2 but i don't know

Answer 1

is your given expression
-4y=8x, or -4y=8

Answer 2

omg yeah its -4y =8x im sorry

Answer 3

okay so, the constant of variation.
To work out the constant of variation, you must rearrange your expression in the form y=kx
where k is a constant

you have
-4y=8x

can you rearrange this to make y the subject?

Answer 4

i don't know how i'm just trying to get a bit caught up, i'm sorry

Answer 5

okay if you want to rearrange an expression you must know what the opposite signs are for example

opposite to addition is subtraction, + -
opposite to subtraction is addition - +
opposite to multiply is divide x /
opposite to divide is multiply / x

so
we have -4y=8x
we want 1 y, not -4y
since -4y is -4 multiplied by y
we must divide by something to get y
so we know if we have -4 divided by -4 we get 1
so -4y/-4=y
so we divide by -4 right?

so we must divide by -4 to both sides to get

-4y=8x
-4y/-4=8x/-4
y=-2x

the constant of variation is k, which is the number in front of x
-2 is your answer

Answer 6

you are the real mvp, thank you so much

Answer 7

would appreciate it if you award me with best response