Look at the two equations: 3x + 6 = 21
3x + 6 < 21
Which statement best describes the process used to solve the equations?

answer: 4

step-by-step explanation:

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.

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: