anonymous one year ago Explain the distance formula. Then use it to calculate the distance between A(1, 1) and B(7,­7).

1. Mehek14

$$\bf{D = \sqrt{(y_2-y_1)^2+(x_2-x_1)^2}}$$

2. Mehek14

that is the formula

3. Mehek14

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4. rishavraj
5. Mehek14

so plug in the numbers into the formula

6. anonymous

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7. Mehek14

$$\bf{\sqrt{(7-1)^2+(7-1)^2}}$$

8. Mehek14

so subtract 7-1 = 7-1 =

9. anonymous

That would be 6 and 6.

10. Mehek14

$$6^2\\6^2$$

11. anonymous

So what do you do with the 6^2 ?

12. Mehek14

find $$6^2\\6^2$$

13. anonymous

6^2 = 36

14. Mehek14

36 + 36 = ?

15. anonymous

72

16. Mehek14

$$\sqrt{72}$$

17. anonymous

Why would it be squared 72?

18. Mehek14

$$\bf{D = \sqrt{(y_2-y_1)^2+(x_2-x_1)^2}}$$

19. Mehek14

this is what we did $$\bf{D = \sqrt{(y_2-y_1)^2+(x_2-x_1)^2}}$$ $$\bf{D = \sqrt{(7-1)^2+(7-1)^2}}$$ $$\bf{D = \sqrt{(6)^2+(6)^2}}$$ $$\bf{D = \sqrt{36+36}}$$ $$\bf{D = \sqrt{72}}$$

20. anonymous

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