Solve the system of equations below by graphing.
a. 2.4x-y=-3.5
b. x²+x+y=6

What are the approximate solutions rounded to the nearest tenth?

a. (-6.2,-4) and (5,0.6)
b. (-4,-6.2) and (0.6,5)
c. (-2.4,2.4) and (3.7,-12.8)
d. (2.4,-2.4) and (-12.8,3.7)