$\"\"$

The parametric equation are $\"\"$ and $\"\"$ over the interval $\"\"$

Observe that $\"\"$

So $\"\"$

Construct a table with different values of $\"\"$ .

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

$\"\"$

Graph :

(1) Draw the coordinate plane.

(2) Graph the equations $\"\"$ and $\"\"$ for $\"\"$ .

$\"\"$

Indicate the obtained points on the graph.

Based on the values of $\"\"$ , indicate the direction of $\"\"$ as it increases with an arrow.

$\"\"$

(b)

The parametric equation are $\"\"$ over the interval $\"\"$ .

Let us take $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$ .

Therefore, the Cartesian equation is $\"\"$ .

$\"\"$

(a)

Graph :

$\"\"$

(b)

The Cartesian equation is $\"\"$ .