Answer Key 3.3

  1. m=-\dfrac{3}{5}
  2. m=\dfrac{5}{4}
  3. m=-4
  4. m=\dfrac{2}{7}
  5. m=-\dfrac{1}{3}
  6. m=\dfrac{3}{5}
  7. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{15-10}{-2-2}\Rightarrow \dfrac{-5}{4}
  8. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-12-2}{-6-1}\Rightarrow \dfrac{-14}{-7}\Rightarrow 2
  9. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{0-10}{0--5}\Rightarrow \dfrac{-10}{5}\Rightarrow -2
  10. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{8--2}{7-2}\Rightarrow \dfrac{10}{5}\Rightarrow 2
  11. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-10-6}{-8-4}\Rightarrow \dfrac{-16}{-12}\Rightarrow \dfrac{4}{3}
  12. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-6-6}{9--3}\Rightarrow \dfrac{-12}{12}\Rightarrow -1
  13. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-4--4}{10--2}\Rightarrow \dfrac{0}{12}\Rightarrow 0
  14. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{0-5}{2-3}\Rightarrow \dfrac{-5}{-1}\Rightarrow 5
  15. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{8-4}{-6--4}\Rightarrow \dfrac{4}{-2}\Rightarrow -2
  16. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-7--6}{-7-9}\Rightarrow \dfrac{-1}{-16}\Rightarrow \dfrac{1}{16}
  17. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{4--9}{6-2}\Rightarrow \dfrac{13}{4}
  18. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{0-2}{5--6}\Rightarrow \dfrac{-2}{11}
  19. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{0-0}{-5--5}\Rightarrow \dfrac{0}{0} \therefore \text{Undefined}
  20. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-13-11}{-3-8}\Rightarrow \dfrac{-24}{-11} \Rightarrow \dfrac{24}{11}
  21. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-7-9}{1--7}\Rightarrow \dfrac{-16}{8} \Rightarrow -2
  22. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{7--2}{1-1}\Rightarrow \dfrac{9}{0} \therefore \text{Undefined}
  23. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-9--4}{-8-7}\Rightarrow \dfrac{-5}{-15} \Rightarrow \dfrac{1}{3}
  24. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{-3--5}{4--8}\Rightarrow \dfrac{2}{12} \Rightarrow \dfrac{1}{6}
  25. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{4-7}{-8--5}\Rightarrow \dfrac{-3}{-3} \Rightarrow 1
  26. m=\dfrac{\Delta y}{\Delta x}\Rightarrow \dfrac{1-5}{5-9}\Rightarrow \dfrac{-4}{-4} \Rightarrow 1

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Intermediate Algebra by Terrance Berg is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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