Chapter 9 Test B

Ian's summer algebra, August 2004.

Indicate whether the given statement is true or false.

5.

Or[ -4 > -3 ,  15 ≤  10]

6.

And[ 8 ≥ 8 ,  -1 < 0]

Solve.

9.

Reduce[2  w > 3  w - 5]

10.

Reduce[-2 t < 16]

11.

Reduce[-(1/3) n < 12]

12.

Reduce[14 > 7 (d - 1)]

13.

Reduce[5 (2 - b) ≤ 3  b + 6]

14.

Reduce[(1/4) a + 2 ≥ 7]

15.

Reduce[(1/2) r + 5 ≥ r + 6]

Write as a compound inequality.

16.

Reduce[x - 3 > 2]

Reduce[-(x - 3) > 2]

State whether the given point is in the graph of the inequality.

18.

y < -2 x + 7 /. {x -> 3, y -> 1}

19.

x - y ≥ 4 /. {x -> 2, y -> -3}

Graph the inequalities.

22.

Plot[{2  x, 3}, {x, -3, 3}]