12 girls out of 30 were selected, so the ratio "selected:tried" if 12/30. This fraction can be simplified into

Similarly, 16 boys out of 40 were selected, so the ratio "selected:tried" if 16/40. This fraction can be simplified into

So yes, the ratio of the number of students on the team to the number of students trying out the same for both boys and girls
Your question is a bit unclear, but if you mean which lines are parallel to this one then I have an answer.
1/2*4=2 so this line would be y=2 which means it is a horizontal line. Therefore, any other horizontal line would be parallel to it. So just pick a value for Y to equal and that will be your answer.
ie. y=7
-32 + 32 =0
there is an infinite amount of answers to this i just did freezing point in Fahrenheit <span />
X =5 -a bro that's what I got