## anonymous one year ago The distance between A (-4, 2) and B(4, 2) is.

1. mathstudent55

Did you try graphing the points?

2. mathstudent55

There is a distance formula to find the distance between any two points on the coordinate plane, but if the points are on a horizontal line or on a vertical line, you don't need to use the formula, and you can still find the distance easily.

3. anonymous

yeah i tried it and i got 64 then i tried breaking it down and i dont know how to get the answer. i get to choose from 4, 6 , and 8

4. mathstudent55

Just graph it as I suggested above.

5. pooja195

$\huge~\rm~\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ did you use this?

6. anonymous

yes

7. mathstudent55

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8. anonymous

even if i graph it i dont know what im doing

9. mathstudent55

See? The points are on a horizontal line, so the distance is simply the distance along the horizontal line the points lie in.

10. pooja195

list your: x1=? x2=? y1=? y2=?

11. mathstudent55

|dw:1437619236726:dw|

12. mathstudent55

How far is it from -4 to 4 on the number line?

13. anonymous

so is it 8

14. mathstudent55

Correct.

15. mathstudent55

@pooja195 wrote the distance formula. If the points do not lie on a horizontal or vertical line, you need to use it. If the points do lie on a horizontal or vertical line, you can still use it, but my way above is shorter.