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y -intercept ANSWER slope ANSWER Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. ? In the equation y = mx + b, the value of m is the of the graph of the equation. 1. ? In the equation y = mx + b, the value of b is the of the graph of the equation. 2.

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Prerequisite Skills VOCABULARY CHECK parallel ANSWER 3. ? Two lines are if their slopes are equal.

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Prerequisite Skills SKILL CHECK Find the slope of the line that passes through the points. ANSWER 3 4 4.4. (4, 5), (2, 3) ANSWER 1 5.5. (0, –6), (8, 0) 6.6. (0, 0), (–1, 2) ANSWER –2–2

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Prerequisite Skills SKILL CHECK Identify the slope and the y- intercept of the line with the equation. 7. y = x + 1 8.8. y = x – 6 3 4 3 4, –6 ANSWER 1, 1 ANSWER 9. y = – 2 5 x– 2 2 5, –2 ANSWER –

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Prerequisite Skills SKILL CHECK Evaluate the function when x = –2, 0, and 4. 10. f(x) = x – 10 11. f(x) = 2x + 4 12. f(x) = –5x – 7 0, 4, 12 ANSWER 3, –7, –27 ANSWER –12, –10, –6 ANSWER

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