## anonymous one year ago What is the length of the line segment shown on this coordinate grid? First quadrant coordinate grid with a line segment connecting points (2, 5) and (9, 5). units

1. anonymous

i need help i dont get it :/

2. KyanTheDoodle

Is there any image, or is that just the question?

3. anonymous

i could not get the image but the line segment is to 5 and 9

4. KyanTheDoodle

@dieg Don't just give the answer. Guide @true-love-never-dies through the process.

5. anonymous
6. anonymous

calculator

7. anonymous

go to it

8. KyanTheDoodle

Don't go to it.

9. anonymous

If in case you want to learn and not to cheat... To calculate for the length, you have to use the distance formula: $$d=\sqrt{(x_2-x_1)^2-(y_2-y_1)^2}$$ where (x1, y1) = (2, 5) and (x2, y2)= (9, 5) just plug in the given point into the formula. Welcome to Openstudy :)

10. e.mccormick

Take a look at the points: Points (2, 5) and (9, 5) They have the same Y value. That means it is a horozontal line and you can shortcut this by just seeing the difference in X. So from 2 to 9 is how many steps?

11. anonymous

7

12. e.mccormick

The calculation AntiNode works in all cases, but yes, on simple ones where either the X or the Y is the same, it is a horozontal or vertical line and it is that easy. So 7 is it.

13. anonymous

um thx

14. e.mccormick

|dw:1433976030832:dw|

15. e.mccormick

|dw:1433976087982:dw|

16. e.mccormick

I hope that helps the explanation as to why this shorcut works when the y value is the same.

17. anonymous

it did

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