Page 499 - Algebra 1

Practice Distributed and Integrated
Determine if the systems of equations are consistent and independent, consistent and dependent, or inconsistent.
1. -_1x+y=5 (67) 2
x + y = 5
Solve the inequalities.
3. x+2-3≤6 (66)
*5. -15 ≤ 2x + 7 ≤ -9 (73)
2. y=5x-3 (67)
2y - 10x = 8
4. z+5≥1.5 (66)
*6. x - 3 ≥ 4 OR x + 2 < -5 (73)
*7. Graph the compound inequality -4 ≤ x ≤ 5. (73)
*8. Write a compound inequality that represents all real numbers that are no more (73) than 1 or no less than 6.
*9. Multiple Choice Which inequality describes the graph? (73)
-4 -2 0 2 4 6
A x < -1 OR x > 3 B x > -1 OR x < 3
C x < -1 AND x > 3 D x > -1 AND x < 3
*10. Noise A human being cannot hear sound that is below 0 decibels and has a pain (73) threshold of 120 decibels. Write a compound inequality that describes the decibel
levels that human beings cannot hear or are too painful to hear.
*11. Write Explain the difference between the use of the words AND and OR in a
(73) compound inequality.
12. Factorx2 -12x+32. 13. Addx3 xy+x3 xy.
√ √
*14. Geometry A rectangle is described by the trinomial x2 + 12x + 27. What are the
(72)
(69)
(72) dimensions of the rectangle?
15. Multi-Step Factor the polynomial 8x + x2 - 4 - 5x.
(72)
16. Multiple Choice In which of the trinomials are the binomial factors equal?
(72) A (x2 +7x-8) B (x2 +6x+9) C (x2 +9x+8) D (x2 +7x+12)
*17. Use the scatter plot and the trend line to write an equation of the line. (71)
15
y
10
5
O
x
484 Saxon Algebra 1
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