All of this questions are common sense.

Question#1

Read the definition of a perpendicular line

Read about the slope of a line

Learn the point- slope formula

Question #2

Graph it in you calculator and you will see if it symmetrical, if it is reflected across the x or y axis. Just look at the table of x and y values.

Question #3

The graph of an odd function has rotational symmetry with respect to the origin.

Question #4

Compare the graphs and you will see the difference between and