draw a line representing the "rise" and a line representing the "run" of the line. state the slope of the line in the simplest form.

-2x

Step-by-step explanation:

Rise over run,

This line goes up 4 (It goes up so it's positive).

and it goes to the left -2 times (Since it's left it's negative).

Slope: 4/-2 or -2/1 which is -2x

expression #3 is not equivalent. the others are.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.