CHAPTER 5 PRACTICE TEST

As a study aid, we have included complete solutions for each Practice Test problem at the back of this book.

  1. Find the slope of the line through (2 ,  − 5) and ( − 1 ,  4) . 

  2. Is x =  − 2 ,  y = 3 a solution to the system of equations

    2x + 5y = 11y − 5x = 12 ? 

    Explain.

  3. Evaluate:

     |  − 13 − 24 − 305 − 42 | 

  4. Solve by substitution:

    x + 2y = 54y = 3 − 2x

  5. Solve by determinants:

    3x − 2y = 42x + 5y =  − 1

  6. By finding the slope and y-intercept, sketch the graph of 2x + y = 4 . 

  7. The perimeter of a rectangular ranch is 24 km, and the length is 6.0 km more than the width. Set up equations relating the length l and the width w, and then solve for l and w.

  8. Solve by addition or subtraction:

    6N − 2P = 134N + 3P =  − 13

  9. In testing an ...

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