Find the equation of the line with: 1. m = 3, b = -2 2. m = -2, b = 5 3. m = 2 (1, 4) 4. m = -3 (-2, 8) y = 3x – 2 y = -2x + 5 y = -3x + 2 y = 2x + 2.

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Presentation transcript:

Find the equation of the line with: 1. m = 3, b = m = -2, b = 5 3. m = 2 (1, 4) 4. m = -3 (-2, 8) y = 3x – 2 y = -2x + 5 y = -3x + 2 y = 2x + 2

1. (-1, 5) 2. (0, -1) 3. (-5, -5) 4. (3, 0) 5. (3.5, -7.5) 6. (-3.5, -1) 7. (0.5, 1.5) 8. (-7.5, -3.5) 9. (6.5, -5) 10. (-2.5, -1) 11. (-0.5, -4.5) 12. (-4, 4) 13. (-5.5, 0) 14. (4, 5.5) 15. (1, -6)

GRE 504: Find the midpoint of a line segment* GRE 603: Use the distance formula

 The distance formula is used to find the distance between two points on a coordinate plane. The Distance Formula (x 1 – x 2 ) 2 + (y 1 – y 2 ) 2 d = √

Find the distance between the coordinates: (2, 4) & (6, 7) (x 1, y 1 ) (x 2, y 2 ) (x 1 – x 2 ) 2 + (y 1 – y 2 ) 2 (2 – 6) 2 + (4 – 7) 2 (-4) 2 + (-3) 2 d = √ d = √ = √ 25 d = 5

Identify the points! (-3, -3) and (5, 3) Use the formula!.. d = (-3 – 5) 2 + (-3 – 3) 2 d = 10 That’s the distance! √ d = (-8) 2 + (-6) 2 d = √ √ √ d = 100

Identify the points! (4, -2) and (6, 7) Use the formula!.. d = (4 – 6) 2 + (-2 – 7) 2 d = 9.22 That’s the distance! √ d = (-2) 2 + (-9) 2 d = √ √ √ d = 85