Plss help i’ll give brainliest thank you!

The two-way frequency table below shows data on playing a sport and playing a musical instrument for students in a class.

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3