Geometrical Visualisation of Inverse Proprtion

Q.

With reference to the graph below, which of the following is true?

1. $y$ is inversely proportional to the reciprocal of $x$

2. $x$ is inversely proportional to the reciprocal of $y$

3. $x$ and $y$ are directly proportional

4. $x$ and $y$ are inversely proportional

Q. Suppose $f$ is the collection of all ordered pairs of real numbers and $x=6$ is the first element of some ordered pair in $f$. Suppose the vertical line through $x=6$ cuts the graph of $f$ twice. Is $f$ a function or not?

Q.

Let a regular polygon have x sides and let its central angle be y degrees, then which of the following statements is true?

1. x and y are directly proportional.

2. x and y are inversely proportional.

3. $x$ and $\frac{1}{y}$ are inversely proportional.

4. $y$ and $\frac{1}{x}$ are inversely proportional.