Algebra I Chapter 5 Test Review SOLUTIONS

The solutions to each question are listed below. Each part of a question is separated by semicolons - i.e. If there was 1) (a) (b), the answer would be listed 1) answer to a; answer to b.

Solutions:
1) add 9 to both sides; multiply by 8 on both sides
2) R = D/2; w = (P/2) - l; r = d/t; h = 2A/b
3) h = 3.5
4) k = 4
5) x = -2.45 (rounded to 2 decimal places)
6) rate of change ~ -167 dollars per year
7) C
8) plot points; connect using line segments; 1994 to 1996
9) -3/4; use the slope formula (6-9)/(2+2) = -3/4 so yes it is on the line; (10, 0)
10) -0.5; 1; 1
11) (9, 15) and (17, 22)
12) undefined
13) 0
14) y = 2x + 7
15) y = 26x + 800; $3192 for 92 people
16) y = -8 + 6(x - 3) or y = 6x - 26
17) y = 7 + 8(x -5) or y = -1 + 8(x - 4)
18) y = 2x - 10
19) y = 2x - 8
20) yes
21) no
22) no
23) (18 - 5) - v or 13 - v
24) y = 2x + 4; y = 0.5x - 2.5; y = -4x - 5
25) y = 30300 + 900(x - 11) or y = 900x + 20400