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Re: Homework Help

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Warriorlord22 is not online. Warriorlord22
Joined: 10 Apr 2010
Total Posts: 3014
07 Sep 2014 09:40 PM
Given A(1,2k) and B(2k+1,5) two points on line l. Determine the value of parameter k if:

The slope of l is equal to 3/2 (3 over 2)

please explan how to do this.
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RadecMortem is not online. RadecMortem
Joined: 19 Oct 2010
Total Posts: 13988
07 Sep 2014 09:40 PM
STOP IT MY BRAIN HURTS
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Warriorlord22 is not online. Warriorlord22
Joined: 10 Apr 2010
Total Posts: 3014
07 Sep 2014 09:44 PM
bump, really need help
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LordPhantomized is not online. LordPhantomized
Joined: 26 Nov 2013
Total Posts: 15237
07 Sep 2014 09:45 PM
....
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Warriorlord22 is not online. Warriorlord22
Joined: 10 Apr 2010
Total Posts: 3014
07 Sep 2014 09:47 PM
b
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Kasurokov is not online. Kasurokov
Joined: 12 Jan 2012
Total Posts: 9215
07 Sep 2014 09:49 PM
you ask c&g rather than searching this up on google
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Warriorlord22 is not online. Warriorlord22
Joined: 10 Apr 2010
Total Posts: 3014
07 Sep 2014 09:50 PM
kasurokov, why dont you tell me what the hell i search in google to get the answer to this obscure question

"analytic geometry examples" give me much different questions

especially because this is a canadian curriculum-based book
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The96 is not online. The96
Joined: 29 Jul 2013
Total Posts: 267
07 Sep 2014 09:51 PM
draw a picture of a graph
set up an equation from it
5-2k = 2k+1-1
solve for k
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TheGrizzlyy is not online. TheGrizzlyy
Joined: 28 Mar 2013
Total Posts: 1776
07 Sep 2014 09:51 PM
I would help but I got math homework of my own to do...
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NewbControl114 is not online. NewbControl114
Joined: 09 May 2009
Total Posts: 10303
07 Sep 2014 09:51 PM
POINT SLOPE FORM (SIMPLIFIED) IS m = y-y1/x-x1 WHERE M = THE SLOPE.


SUBSTITUTE

A(1, 2k) and B(2K+1, 5), M IS 3/2

3/2 = 5 - 2K / 2K+1 - 1

CROSS MULTIPLY

3(2K) = 2(5 - 2K)

SOLVE FOR K

6K = 10 - 4K

10K = 10



K = 1


YEAH
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GianniFlash is not online. GianniFlash
Joined: 19 Aug 2009
Total Posts: 3467
07 Sep 2014 09:52 PM
are you in 6th grade?

lol!!! xdd
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TheGrizzlyy is not online. TheGrizzlyy
Joined: 28 Mar 2013
Total Posts: 1776
07 Sep 2014 09:52 PM
But maybe you should go in to see your teacher for help.
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The96 is not online. The96
Joined: 29 Jul 2013
Total Posts: 267
07 Sep 2014 09:52 PM
i did it in my head so im not sure if im right
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zachlovespizza is not online. zachlovespizza
Joined: 16 Mar 2011
Total Posts: 16041
07 Sep 2014 09:52 PM
just go to school and before school starts ask for the teachers help
i did it once or twice before

Rainbowdash/Sadmiles4ever
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UAVisOnline is not online. UAVisOnline
Joined: 26 May 2011
Total Posts: 3061
07 Sep 2014 09:52 PM
if it means solve for k then:

slope = y2 - y1/x2 - x1 = so 5-2k/2k-1 = 3/2

multiply 2k-1 to the other side:

5-2k = 3k - 3/2 --> solve for k

13/2 = 5k

k = 13/10
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waysideme is not online. waysideme
Joined: 19 Dec 2009
Total Posts: 3591
07 Sep 2014 09:53 PM
The answer is 69
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TheMrSmarty is not online. TheMrSmarty
Joined: 17 Jul 2012
Total Posts: 256
07 Sep 2014 09:54 PM
5-2k/2k+1-1= 5-2k/2k=3/2
5-2k(2)=2k(3)=10-4k=6k
10-4k+4k=10
6k+4k=10k
10k/10=k
10/10=1
k=1
(1,2(1)=(1,2)
(2(1)+1,5)=(2+1,5)=(3,5)
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LuckLuckbronie is not online. LuckLuckbronie
Joined: 03 Feb 2012
Total Posts: 15436
07 Sep 2014 09:54 PM
parameter k is 4.

my names ray and i like to use reapers
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NewbControl114 is not online. NewbControl114
Joined: 09 May 2009
Total Posts: 10303
07 Sep 2014 09:55 PM
CHECK YOUR WORK:

5 - 2(1) / 2(1) + 1 - 1 = 3/2

5 - 3 / 2 + 0

3 / 2 = 3 / 2

YES

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UAVisOnline is not online. UAVisOnline
Joined: 26 May 2011
Total Posts: 3061
07 Sep 2014 09:57 PM
woops mean 1 i didnt see that comma
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Warriorlord22 is not online. Warriorlord22
Joined: 10 Apr 2010
Total Posts: 3014
07 Sep 2014 10:02 PM
thank you friends
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NewbControl114 is not online. NewbControl114
Joined: 09 May 2009
Total Posts: 10303
07 Sep 2014 10:05 PM
Allow me to explain it better.

"Given A(1,2k) and B(2k+1,5) two points on line l. Determine the value of parameter k if:

The slope of l is equal to 3/2 (3 over 2)"

Both of these points are on the line, and that line has a slope of 3/2.

The Easiest way to find what K is, is naturally to solve for them.

---
Point slope form (AND/OR the SLOPE FORMULA) is used for two points on a line and is used to find the slope. Since you already know the slope, you can use it to solve for k.

m = y - y1 / x - x1 where (x, y) and (x1, y1) are two individual points on the line.

We'll say A = x1,y1 and B = x, y

Substitute the values. - A(1,2k) and B(2k+1,5)

3/2 = (5) - (2k)/ (2k+1) - 1

3 = 5 - 2k
--=--------
2 = 2k + 1 - 1 (1 - 1 = 0, cancel)

Cross multiply so that 2(5-2k) = 3(2k)

Distribute so that 10 - 4k = 6k

Add 4k to both sides (because it's easier) and Divide by ten

k = 1.
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