Algebra 2 TEST 1



Algebra 2 SIX WEEKS TEST Review

Graph the number line for each interval notation.

|1. [pic] or [pic] |2. [pic] or [pic] |

| | |

|[pic] |[pic] |

Simplify.

|3. [pic] |4. [pic] |5. [pic] |

| | | |

| | | |

| | | |

|Evaluate each expression given [pic] and [pic]. |Yes or No? Do the following represent a function? And give the domain and range |

|6. [pic] |8. [pic] |9. |

| | |[pic] |

|7. [pic] |10. |11, |

| |[pic] |[pic] |

|Find[pic] for each function. | |

|12. |13. [pic] |15. Find the rate of change. |

|[pic] | |[pic] |

| | |[pic] |

| | |[pic] |

| | |[pic] |

| | |[pic] |

| | | |

| | |[pic] |

| | |[pic] |

| | |[pic] |

| | |[pic] |

| | |[pic] |

| | | |

| |14. [pic] |16. Is Number 15 linear? Why? Or Why Not? |

Solve.

|17. [pic] |18. [pic] |19. [pic] |

Write the equation of each line in slope-intercept form.

|20. line passing through [pic] and with a slope |21. line passing through [pic] and [pic] |22. the line (a) parallel and (b) perpendicular |

|of [pic] | |to the line [pic] and passing through [pic] |

|23. Graph the line [pic] using its intercepts. |24. Graph the inequality [pic]. |

|[pic] |[pic] |

IX. Word Problems.

|25. Emma’s cell phone plan charges her a $76 fixed fee plus $0.16 per |26. If 80% of the 600 seniors take math at Bowie, how many seniors are in |

|minute over her allowed 1000 minutes. If her bill was $104, how many extra |math? |

|minutes did she use? | |

Linear Regression.

|27. Given the data, find… |

| |

|Years Cell Phones In Use |

|1 |

|4 |

|6 |

|12 |

|14 |

|17 |

| |

|Number of cell phones thousands |

|52 |

|151 |

|221 |

|497 |

|556 |

|604 |

| |

| |

|the correlation coefficient |

|an equation for the line of best fit |

|a prediction for the number of cells phones for 26 years in use. |

|Predict the years in use given 1200 (thousands) cell phones. |

Solve each absolute value equation or inequality and check! (Remember, each problem has 2 parts.)

|28. [pic] |29. [pic] |30. [pic] |

Linear Systems.

|31. Is [pic] a solution to the system? [pic] |32. Solve the system by substitution. |

| |[pic] |

|33. Solve the system by elimination. |34. Solve the system by elimination. |

|[pic] |[pic] |

|35. Solve the system by use of a calculator. |

|[pic] |

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