1.

See explanation for result.

1 answ
2.

See explanation for result.

1 answ
3.

See explanation for result.

1 answ
4a.

See explanation for result.

1 answ
4b.

1 answ
5.

See explanation for result.

1 answ
6.

### Practice and Problem Solving

7.

Shade to the left of the first equation and above the second equation (see graph).

1 answ
8.

Shade to the left of the first equation and below the second equation (see graph).

1 answ
9.

Shade to the left of the first equation and above the second equation (see graph).

1 answ
10.

Shade above the first equation and to the right of the second equation (see graph).

1 answ
11.

Shade to the right of the first equation and above the second equation (see graph).

1 answ
12.

Shade to the left of the first equation and shade below the second equation (see graph).

1 answ
13.

Shade below the first equation and shade to the left of the second equation (see graph).

1 answ
14.

The solution is the empty set (see graph).

1 answ
15.

The solution is the empty set (see graph).

1 answ
16.

See explanation for result.

1 answ
17.

The shaded area represents the number of hours he should work at each place (see graph).

1 answ
18.

(0,0), (4,0), (0,2)

1 answ
19.

(-7,8), (5,8), (2,-1)

1 answ
20.

(1,9), (4,9), (4,0)

1 answ
21.

1 answ
22.

(-2, 9/2) (-6, -5) (7.5, -7)

1 answ
23.

(6, -4) (8, 4) (-2, 3)

1 answ
24.

1 answ