## anonymous one year ago Select the equation of the line that passes through the point (2, 6) and is perpendicular to the line x = 4. y = 4 y = 6 x = 6 x = 2 I dont just want the answer. I need someone to explain how to get the answer so i will understand. Will give medals

1. MrNood

so - can you sketch the line x=4 |dw:1442170505003:dw| Use the above axes....

2. anonymous

|dw:1442170570026:dw|i am new at this

3. anonymous

@MrNood

4. MrNood

that is the POINT x= 4 the LINE x=4 is like this: |dw:1442170720887:dw| can you draw ANY line on there that is perpendicular to the line?

5. anonymous

A perpendicular line has to make a 90 angle when crossing that line correct?

6. anonymous

so i would say no @MrNood

7. MrNood

yes it has to make a 90 deg angle the line x= 4 is VERTICAL so what would be true about a line which is 90 deg to that?

8. anonymous

x= -1/4

9. anonymous

@MrNood got this sorry

10. MrNood

it's not -1/4 but OK go ahead

11. anonymous

no i dont want the answer i want to understand how to do this @MrNood

12. anonymous

@MrNood dont leave

13. MrNood

what do you mean by 'got this'? you have confused two things when you said -1/4 the slope of a perpendicular line IS -1/m in general - but this question is slightly special because the slope of x=4 is infinite so if the slop of a VERTICAL line is infinite - what is a perpendicular line called (and what is its slope?)

14. anonymous

@MrNood would the slope be undefined not sure so confused in this section

15. MrNood

I have drawn the line above. firstly - try to draw a line which is perpendicular to the VERTICAL line I have put VERTICAL in caps a s clue - what is 'opposite' of VERTICAL?)

16. anonymous

Horizontal

17. MrNood

OK good the slope of a horizontal line is 0 using my drawing first sketch plot the point 2, 6 then draw a horizontal line through it

18. anonymous

|dw:1442172256115:dw| @MrNood |dw:1442172378699:dw| i tried to do it staight

19. MrNood

I don't see either the point (2,6) OR a horizontal line (2,6) means a SINGLE point where x=2 and y = 6 try again

20. MrNood

|dw:1442172699358:dw| now draw a HORIZONTAL line through it

21. anonymous

|dw:1442172764172:dw|

22. MrNood

OK it passes through the point x=2, y=6 it is HORIZONTAL so what can you say about y for ALL points on the line? y=??

23. MrNood

sorry - gtg the answer is in my last post - just answer that question...

24. anonymous

6

25. anonymous

im confused still can anyone help

26. anonymous

im confused still can anyone help

27. anonymous

@dirtydan667 can you help please?

28. anonymous

@nevermind_justschool if you can could you help me please?