Please need help I will give BRIANILIST, thank you so much .

1) 3 = 11, 4 = 15, 5=19

2) Yes, on a graph is creates a linear line. (see attachment)

3) y=2x + 7

4)(other attachment)

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse