Algebra Know-It-ALL

and

y= 2 x^2 − 3 x+ 3

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

4. Plot an approximate graph showing the curves based on the table you created when you
   worked out Prob. 3. On the x axis, let each increment represent 1 unit. On the y axis,
   let each increment represent 5 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.


5. Look again at Practice Exercise 5 and its solution from Chap. 27. Create a table of
   values for both functions, based on x-values of −4,−3,−2,−1, 0, 1, 2, 3, and 4. Here
   are the functions that came from the original equations:

y=x^2 +x+ 1

and

y=x^2 − 2 x− 2

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

6. Plot an approximate graph showing the curves based on the table you created when you
   worked out Prob. 5. On the x axis, let each increment represent 1 unit. On the y axis,
   let each increment represent 4 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.


7. Look again at Practice Exercise 7 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, and 3. Here are the
   functions that came from the original equations:

y=−x^2

and

y= 2 x^3

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

8. Plot an approximate graph showing the curves based on the table you created when you
   worked out Prob. 7. On the x axis, let each increment represent 1/2 unit. On the y axis,
   let each increment represent 10 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.

Practice Exercises 477