An empty 6-gal water jug weighs 0.5 lb. With 3 c of water inside, the jug weighs 2 lb. Which equation models the jugâ€™s weight y when it contains x cups of water?

A.

y=0.5x-0.5

B.

y=-0.5x+0.5

C.

y=0.5x+0.5

D.

y=-0.5x-0.5

31.

What is the slope for the equation -1/2x-y=3/4

A.

3/4

B.

-3/4

C.

1/2

D.

-1/2

33.

Which direction would the graph of y=-lx+2l+3 open?

A.

right

B.

down

C.

left

D.

up

34.

Which equation is in slope-intercept form and represents a line with slope 0 through the point (2, 3)?