Forming equations using proportion by Boxed Rockets

Form Equations to Represent the Following

Question 1:

y is inversely proportional to x, when x = 3, y = 14

y = \frac{42}{x}

Question 2:

y is inversely proportional to x, when x = 6, y = 5

y = \frac{30}{x}

Question 3:

y is directly proportional to x, when x = 11, y = 22

y = 2 x

Question 4:

y is inversely proportional to x, when x = 7, y = 11

y = \frac{77}{x}