How do i do this i'm working on as fractions me

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

Louis wants to give \$15 to kids who need school supplies. he also wants to buy a pair of shoes for \$39. how much money will he have to save for both?

What is the equation of the line written in general form? 0-x+y-2-2 ox+y-2=0 02x+4-2=0