The equation on the graph is shown (I really hope this helps)
See Quadratic Formula and Determinant's/Delta's formula
I dont remember the saying for it or term but its y^2-4y-12 which changes to (y-6)(y+2)
Answer:
1.4 hours: 1 lawn
Step-by-step explanation:
it it took me 7 hours to mow 5 lawns then the ratio is
1.4 hours per lawn