Answer
$(a)$ See the image below.
$(b)$ See the image below.
$(c)$ If the value of $n$ is odd then we have graph in the first and third quadrant. If the value is even then we have graphs in first and second quadrant.
Increase/decrease of the value stretches/shrinks those graphs.
Work Step by Step
$(a)$ See the image above.
$(b)$ See the image above.
$(c)$ If the value of $n$ is odd then we have graph in the first and third quadrant. If the value is even then we have graphs in first and second quadrant.
Increase/decrease of the value stretches/shrinks those graphs.