im having trouble with this one, can anyone please help

[momotheman]

 

[tkhunny]

1) Can you write the equation of the line?
2) Should it be 0 chirps at 0 degrees, or is 25ish at 0 degrees reasonable?

 

[lex]

Going from the point (66,54) to the point (78,58), x increases by 12 and y increases by 4
Going from the point (78,58) to the point (90, ?), x increases by 12, so y will increase by 4