Solve for x.
7x = -42

Solve for x.
x + y -7

1) -6

2) x = -y +7 if you set all terms equal to zero.

Step-by-step explanation:

1) Isolate x by dividing -42 by 7. x = -6

2) Set the entire expression equal to zero.

x + y -7 = 0

Isolate x on one side of the equation. Remember to change signs when moving terms across the equal sign.

x = -y +7 if  the original expression is set equal to zero.

c. 4 and 1/2 pounds is the answer! : )

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.