Xand y vary inversely and x=50 when y=5 find y when x=10 what is k?

x and y vary directly and x=6 when y=42 find k what is y when x=12

Part A)

1)  

2)

Part B)

1)  

2)

Step-by-step explanation:

Part 1) x and y vary inversely and x=50 when y=5 find y when x=10 what is k?

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form or

step 1

Find the value of k

x=50 when y=5

substitute the values

------> ----->

The equation is equal to

 or

step 2

Find y when x=10

substitute the value of x in the equation and solve for y

Part B) x and y vary directly and x=6 when y=42 find k what is y when x=12

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form or

step 1

Find the value of k

x=6 when y=42

substitute the values

------> ----->

The equation is equal to

 or  

step 2

Find y when x=12

substitute the value of x in the equation and solve for y

y-y1=4(x-x1)

step-by-step explanation:

this is point-slope form since you only have 4 as the slope it goes in place of m

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the correct answer is d

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