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1-2 Line Segments and Distance Find each measure. Assume that each figure is ALGEBRA Find the value of x and BC if B is not drawn to scale. between C and D. 1. CD 3. CB = 2x, BD = 4x, and BD = 12 SOLUTION: Here B is between C and D. SOLUTION: So, CD = 3.8 in. ANSWER: 3.8 in. Therefore, x is 3. BC = 2x = 2(3) = 6. 2. RS Thus, BC is 6. ANSWER: SOLUTION: x = 3; BC = 6 So, RS = 2.4 cm. ANSWER: 2.4 cm eSolutions Manual - Powered by Cognero Page1 1-2 Line Segments and Distance 6. WZ 4. CB = 4x – 9, BD = 3x + 5, and CD = 17 SOLUTION: SOLUTION: Here B is between C and D. The distance between W and Z is 9 units. So, WZ = 9. ANSWER: 9 Then x = 3. Use the value of x to find BC. BC = CB = 4(3) – 9 = 3 ANSWER: x = 3; BC = 3 Use the number line to find each measure. 5. XY SOLUTION: The distance between X and Y is 8 units. So, XY = 8. ANSWER: 8 eSolutions Manual - Powered by Cognero Page2 1-2 Line Segments and Distance 8. A(4, 9), C(9, 0) TIME CAPSULE Graduating classes have buried time capsules on the campus of East Side SOLUTION: High School for over twenty years. The points Use the Distance Formula. on the diagram show the position of three time capsules. Find the distance between each pair of time capsules. The distance between A and C is or about 10.3 units. ANSWER: 7. A(4, 9), B(2, –3) or about 10.3 units SOLUTION: 9. B(2, –3), C(9, 0) Use the Distance Formula. SOLUTION: Use the Distance Formula. Substitute. The distance between A and B is or about 12.2 units. ANSWER: or about 12.2 units The distance between B and C is or about 7.6 units. ANSWER: or about 7.6 units eSolutions Manual - Powered by Cognero Page3 1-2 Line Segments and Distance 10. ANALYZE RELATIONSHIPS Which two time 13. SV capsules are the closest to each other? Which are farthest apart? SOLUTION: Look at the distances found for each segment AB, SOLUTION: AC, and BC. Since BC is the shortest, B and C are the closest to each other. Since AB is the longest distance, A and B are farthest apart. ANSWER: B and C; A and B So, SV = 1.5 in. Find each measure. Assume that each figure is ANSWER: not drawn to scale. 1.5 in. 11. JL 14. PR SOLUTION: SOLUTION: So, JL = 1.1 cm. ANSWER: 1.1 cm 12. EF So, PR = 2.1 mm. ANSWER: 2.1 mm SOLUTION: So, EF = 5.3 in. ANSWER: 5.3 in. eSolutions Manual - Powered by Cognero Page4
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