Why is or isn't it a good idea to reduce your pretax income?

Post-tax

Step-by-step explanation:

Pre-tax deductions reduce the amount of income that the employee has to pay taxes on. You will withhold post-tax deductions from employee wages after you withhold taxes. Post-tax deductions have no effect on an employee's taxable income.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.