Describe how the value of the independent variable is related to the value of the dependent variable. ls the relationship additive or multiplicative?

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 is the graph of y= square root -x-3

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²