Ex.) y varies inversely with x. If x = -2 when y = -8, find y when x = -4.

y = -4

Step-by-step explanation:

Since x and y vary inversely, we have:

xy=k

For x= -2 and y = -8, we have:

⇒  -2×-8=k

⇒  k= 16

For x= -4, we have :

⇒  -4y=16

⇒  y= 16/-4

⇒  y=  -4

[RevyBreeze]

y = -4

Step-by-step explanation:

The equation for inverse variation is

xy = k where k is a constant

x=-2 and y = -8  so we can find k

-2 * -8 = k

16 = k

The equation is xy = 16

Know we want to find y when x = -4

-4 *y =16

Divide each side by -4

-4y /-4 = 16/-4

y = -4

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step-by-step explanation:

answer: it actually depends on which is the independent variable and which is the dependent variable. let us say we're looking at a linear equation. y=2x+3. we theoretically could switch the equation to be x=(y-3)/2 and it would be the same line. so either a causes b or it can be that b causes a. so technically the answer is false

step-by-step explanation: