A quadratic function is shown below. Which function can be used to represent the graph?
F f(x) = x2 - X - 12
G f(x) = -X2 - X + 12
H f(x) = x2 + x - 12
J f(x) = -X2 + x + 12

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.