Question

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Answer 1

Okay I'm not sure what a constant of variation is but I can help you with everything else

Answer 2

Do you know the formula for slope?

Answer 3

Okay so for the first question, plug in the values and see what you get

Answer 4

\[\frac{ 1-(-3) }{ 1 - (-2) }\]
that would be your formula for slope

Answer 5

what did you get after solving that formula?

Answer 6

good! so that's the slope for that question
Now you didn't post the graph but what you can do is find 2 points where you can clearly identify the x and y values and then just do the same thing to find the slope

Answer 7

if this is a math question please post in the math area

Answer 8

my bad i though i was in history

Answer 9

if x vartes directly with y then th eequation is y= mx

m is the constant of variation

so take -4y=8x

and rearrange it to y = mx . m is oyur answer then.