Questions

In the first three problems, graph each system on graph paper. If the given graph is correct, state T (True); if it is not, state F (false) and give the correct solution.

1) True or False. The graph represents the solution to the system of equations.

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2) True or False. The graph represents the solution to the system of equations.

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3) True or False. The graph represents the solution to the system of equations.

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For the next three problems, use substitution to solve each system of equations. State the answers as ordered pairs.

4) Solve using substitution.

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5) Solve using substitution.

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6) Solve using substitution.

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For the next three problems, use elimination to solve each system of equations.

7) Solve using elimination.

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8) Solve using elimination.

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9) Solve using elimination.

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10) Describe a consistent, independent system of linear equations and give examples to justify your response.

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11) Describe two different ways to use elimination to solve the system below.

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Review

12) Identify the slope (m) and y-intercept (b) for –0.6x + y = – 4.

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13) Write the equation, in slope-intercept form, of the line that contains the points (–10, –4) and (–3, –3).

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14) Write an equation, in slope-intercept form, for the line that contains the point (5, –2) and is perpendicular to 2x – 5y = 15.

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15) Solve for “z”.

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16) Solve for “x”: 2x + 4(3x + 6) = 12

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17) Solve the inequality for “x”. State the letter of the correct answer.

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18) Solve the absolute value inequality for “x”. State the letter of the correct answer.

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19) Simplify. State the letter of the correct answer.

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20) Find the inverse equation of the given function. State the answer in slope-intercept form.

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21) Solve the system using substitution.

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