If triangle abc is reflected over the y-axis, which of the following shows the coordinates for point c'?

(3, 7)
(3, −7)
(−3, 7)
(−3, −7)

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

City l has a temperature of −3 °f. city m has a temperature of −7 °f. use the number line shown to answer the questions: number line from negative 8 to positive 8 in increments of 1 is shown. part a: write an inequality to compare the temperatures of the two cities. (3 points) part b: explain what the inequality means in relation to the positions of these numbers on the number line. (4 points) part c: use the number line to explain which city is warmer. (3 points)