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Section 1.9 Distance and Midpoint Formulas; Circles

Section 1.9 Distance and Midpoint Formulas; Circles. The Distance Formula. Example. Find the distance between (4,-5) and (9,-2). The Midpoint Formula. (6,8). (-1,5). Example. Find the midpoint of the segment whose endpoints are (-1,7) and (-5,9). Circles. Graphing Calculator.

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Section 1.9 Distance and Midpoint Formulas; Circles

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  1. Section 1.9Distance and Midpoint Formulas;Circles

  2. The Distance Formula

  3. Example Find the distance between (4,-5) and (9,-2).

  4. The Midpoint Formula

  5. (6,8) (-1,5)

  6. Example Find the midpoint of the segment whose endpoints are (-1,7) and (-5,9).

  7. Circles

  8. Graphing Calculator

  9. Write the standard form of the equation of the circle with center (-4,1) and radius of 3. Standard Form 3 (-4,1)

  10. Find the center and radius of the circle whose equation is Graph the equation. Use the graph to identify the relation’s domain and range. Why is it a relation and not a function? Center(-3,4); radius=3 3 Domain: [-6,0]; Range:[1,7] (-3,4)

  11. Example Write the standard form of the equation of the circle with center at (-2,7) and a radius of 5.

  12. Example Find the center and radius of the circle whose equation is below. Graph the equation. Use the graph to identify the relation’s domain and range.

  13. General Form

  14. ? ?

  15. Example Complete the square and write the equation in standard form. Then give the center and radius of the circle and graph the equation.

  16. Example Complete the square and write the equation in standard form. Then give the center and radius of the circle and graph the equation.

  17. Find the distance between the points (-1,8) and (9,5). (a) (b) (c) (d)

  18. Find the midpoint of the line segment with the endpoints of (-1,-1) and (- 5,8). (a) (b) (c) (d)

  19. Write the equation of the line with center at (0,7) and a radius of 4. (a) (b) (c) (d)

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