Algebra 1 Semester Exam Review

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Across
  1. 2. Slope is the rate of ____________ of a line.
  2. 4. The only number that is not positive or negative.
  3. 6. The ___________ formula is used to find any term in an arithmetic sequence: a(n)=a(1)+(n-1)d
  4. 10. A letter used to represent a number
  5. 13. The value of a fraction is zero when zero is in the ____________ of the fraction.
  6. 14. y-y1=m(x-x1)
  7. 15. The set of all outputs or y-values.
  8. 17. The point(0, 0) on a coordinate grid.
  9. 19. Two lines in the same plane that meet at right angles (90 degrees).
  10. 22. A ____________ inequality is two inequalities joined by the word "and" or "or".
  11. 23. The inverse of division.
  12. 26. In standard form, A, B, and C must be this kind of number.
  13. 28. _____________ operations undo each other.
  14. 29. A relation where each input value has only one output value.
  15. 30. The value of a fraction is undefined when zero is in the ____________ of the fraction.
  16. 31. A graph that goes uphill from left to right has a ________________ slope.
  17. 33. Every point on the graph of an equation is a ________________ to the equation.
Down
  1. 1. (y2-y1)/(x2-x1)
  2. 3. The inverse of subtraction.
  3. 5. A statement formed when an equal sign is placed between two expressions.
  4. 7. Two lines in the same plane that do not intersect.
  5. 8. y=mx+b
  6. 9. The line with the equation y=a number.
  7. 10. The __________ line test is used to tell if a graph is a function.
  8. 11. The type of sequence where each term increases or decreases by a constant value.
  9. 12. The ____________ formula is used to find the next term in an arithmetic sequence: a(n+1)=a(n)+ d when a(1) is the first term.
  10. 16. The ___________ difference is the constant difference between terms in an arithmetic sequence.
  11. 18. The slope of a vertical line.
  12. 20. The property where a(b+c)=ab+ac.
  13. 21. Perpendicular lines have slopes that are opposite _____________.
  14. 24. Equations that graph as straight lines.
  15. 25. An equation that is true for all values of the variables.
  16. 27. The set of all inputs or x-values.
  17. 32. Ax+By=C