Algebra Know-It-ALL

9. Look again at Practice Exercise 9 and its solution from Chap. 27. Create a table of
   values for both functions, based on x-values of −3,−2,−1, 0, 1, 2, 3, and 4. Here are
   the functions that came from the original equations:

y= 2 x^3 +x^2 +x− 4

and

y= 3 x^3 − 2 x^2 + 4 x− 5

Use bold numerals to indicate the real solutions, if any exist.

10. Plot an approximate graph showing the curves based on the table you created when you
    worked out Prob. 9. On the x axis, let each increment represent 1 unit. On the y axis,
    let each increment represent 20 units. Draw the first function’s graph as a solid line or
    curve. Draw the second function’s graph as a dashed line or curve. Plot and label all real
    solution points, if any exist.

478 More Two-by-Two Graphs