Calculate the gradient of each of the following lines.

ASAP PLEASE and with explanation

Find the cost of tiling a rectangular plot of land 300m long and 150m wide at the rate of $6 per hundred square m

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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.