## anonymous one year ago REALLY NEED HELP!!! :) Line AB passes through A(-3, 0) and B(-6, 5). What is the equation of the line that passes through the origin and is parallel to line AB ?

1. anonymous

5x – 3y = 0 -x + 3y = 0 -5x – 3y = 0 3x + 5y = 0 -3x + 5y = 0

2. anonymous

I really have no clue how to do this :((((

3. misty1212

HI!!

4. misty1212

they are asking you for the slope of the line or at least you need that first

5. anonymous

Can you walk me through i'm completely lost

6. misty1212

you know the slope of the line between (-3, 0) and (-6, 5) ?

7. misty1212

if you do not, i can show you how to find it

8. anonymous

9. misty1212

first we think, then we do it the math teacher way

10. misty1212

from -6 to -3 is right 3 units from 5 to 0 is down 5 units right 3, down 5, slope is $$-\frac{5}{3}$$

11. misty1212

now the math teacher way $\frac{y_2-y_1}{x_2-x_1}=\frac{5-0}{-6-(-3)}=\frac{5}{-3}=-\frac{5}{3}$

12. anonymous

Okay so how is finding the slope going to give me the answer?

13. misty1212

then since it goes through the origin $$(0,0)$$ the point slope formula gives $y=-\frac{5}{3}x$

14. misty1212

multiply by 3 to get $3y=-5x$

15. misty1212

add $$5x$$ to both sides to put it in standard form get $5x+3y=0$

16. anonymous

oooooh okay :) Thank you!!!!

17. misty1212

i see that is not an answer choice though

18. misty1212

we can fix that multiply all by -1 get $-5x-3y=0$

19. anonymous

oh wait its not :/

20. anonymous

ohh alright thank you again much appreciated!

21. misty1212

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