A) 34y=15=
b) -58y=20=
c) -x=23=
d) -51=-y=

a) 34y=15

=> y= 34-15

=> y = 19

b) -58y=20

=> y= -58-20

=> y = -78

c) -x=23

=> -1x=23

=> x= 23+1

=> x= 24

d) -51= -y

=> -51= -1y

=> y= -51+1

=> y= -50

Hope it helps!

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.