1. y=6X-9-18x2+3
a. falling to the left and rising to the right b. rising to the left falling to the right
c. rising to the left rising to the right
d. falling to the left falling to the right

2. y=-x³
a. falling to the left and rising to the right b. rising to the left falling to the right
c. rising to the left rising to the right
d. falling to the left falling to the right

3. y=-6x⁴-9x³-18x²+3
a. falling to the left and rising to the right b. rising to the left falling to the right
c. rising to the left rising to the right
d. falling to the left falling to the right​