## anonymous one year ago HELP PLEASE!!!! If the slope of line P is 1/3 and the length of line segment BC is 4, how long is line segment AB?

1. anonymous

|dw:1439412783604:dw|

2. nincompoop

you can use slope formula

3. anonymous

what do i do?

4. nincompoop

remember that slope is the ratio of change in y and change in x

5. anonymous

so what do i do next?

6. nincompoop

$$\large slope = m =\frac{1}{3} = \frac{\Delta y}{\Delta x} \rightarrow \frac{1}{3}=\frac{\Delta y}{4}$$|dw:1439413168034:dw|

7. anonymous

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8. nincompoop

easy right? it's all about knowing the definition and have a full understanding of it.

9. anonymous

|dw:1439413357514:dw|

10. nincompoop

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11. nincompoop

their magnitudes are the same