Co-ordinate Geometry. What are the equations of these lines. Write in the form ax + by + c = 0 1)Passes though (2,5) and gradient 6 2)Passes through (-3,2)

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Presentation transcript:

Co-ordinate Geometry

What are the equations of these lines. Write in the form ax + by + c = 0 1)Passes though (2,5) and gradient 6 2)Passes through (-3,2) and (4,-1) 3)Passes through (2,8) and parallel to y = 3x – 2 4)Passes through (5,-2) and perpendicular to y = -4x - 9

Answers 1)6x – y – 7 = 0 2)3x + 7y – 5 = 0 3)3x – y + 2 = 0 4)x – 4y – 13 = 0

1)What is the midpoint of the line segment joining (8,2) to (-3, 15) 2)The midpoint of a line segment is (7,-4). One end of the line segment is at (0,-9). What are the coordinates of the other end of the line segment? 3)What is the exact length of the line segment in part (2)?

Answers

Work out the answers to these problems to 3 significant figures 1)What is the area of this triangle? 2)Calculate the missing angle in this triangle whose area is 15 cm 2. 5 cm 11 cm 54  49  77  7 cm 9 cm AA

1)5.25 cm 2. 2)28.4 