Algebra I Chapter 8 Review SOLUTIONS

Remember your test is Wednesday (April 14)!!

Solutions:
1) yes, domain: {0, 1, 2, 3, 4}, range: {7}; yes, domain: {-2, -1, 0, 1, 2}, range: {0, 1, 4}; no, domain: {0, 1, 2}, range: {-8, -1, 0, 1, 8}
2) yes
3) y = 2 (horizontal line with y-intercept 2); yes
4) D
5) volume of the balloon
6) independent: numbers of fans, dependent: number of buses; independent: time, dependent: height; independent: number of coins, dependent: probability
7) 11
8) 31
9) 2
10) 0, 2, 6; line with slope 1 and y-intercept 2
11) 8; 23; 10; 0
12) 1; 2; domain: -2 ≤ x ≤ 7, range: 0 ≤ y ≤ 6
13) x = 2 or x = -2; x = 0; 2; if x < -1 or x > 1
14) 55 ft
15) H(d) = 0.3d + 10
16) P(x) = 0.40 + 0.26(x - 1); P(6) = $1.70
17) linear, decreasing at a constant rate
18) curve going up, then down
19) -5
20) V shape with its vertex at (3, 0) - if you're not sure, make an input-output table
21) -2
22) 57
23) 12 or -12
24) x = 7 or x = -7
25) Upside down U shape with its vertex at (0, 0) - make an input-output table for exact values
26) for x > 1
27) 4; 4; 36; 64; 10; A = s^2

Good Luck! <3 Mrs G