A digital scale reports a 10 kg weight as weighing 9.998 kg. Which of the following is true?

A. The scale is precise but not accurate.
B. The scale is neither precise nor accurate.
C. The scale is accurate but not precise.
D. The scale is both accurate and precise.

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.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

think the answer would beb

60: 45 =12: 9 =4: 3 so the answer is 4: 3