What is the slope of the line that passes through the pair of points (-5/3, -1) and (-2, 9/2)?

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

Which of the following will form the composite function?

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?