What is an equation of the line that passes through the point (4,5) and is parallel to the line 3x-y=1?

There are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play and of the girls 8 do not have a speaking part in the play if a child from the cast of the place chosen at random what is the probability that the child has a speaking part

Hi my sisters and brothers can tell me the answer because i don’t understand the question

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.