1. Review Answers 10.notebook September 05, 2012
1. y = 7 or h(3) = 7 1
7. y = x + 11
2. x­int (4.5, 0) y­int (0, ­3) 6 3
8. y = ­2x ­ 1
9. a) y = 2x + 8
­1 1
b) y = x + 2
2
10. y = 2x ­ (1/2)
m = 2, b = ­1/2
3. x­int (3/4, 0) y­int (0, ­1)
11. m = ­1/3, b = ­3
4. m = 2/3
5. m = ­5/4
6. m = 0 ­ horizontal line
12. y = 3x ­ 3 18. up 7 because of y­int
more steep because of slope getting bigger
13. D: {­2, ­1, 0, 1} falling line because of negative slope
R: {­3, ­1, 1, 3, 5} 19. D:{­4, ­1, 2, 3}
not a function R: {­2, 1, 5, 6}
14. a) not linear No
b) linear
15. 27 mpg
16. D:{­4≤ x ≤4}
R: {­2 ≤ y ≤ 2}
Yes
17. y = (5/8)x + (17/8)
1