Need help with numbers 5-8

Question

samirahsamirah · Answer

attachment

kendricklamar2014 · Answer

$$m = \frac{ y2 - y1 }{ x2 - x1 }$$

kendricklamar2014 · Answer

Take a look at this video: https://www.youtube.com/watch?v=1Cm7hjMUsrQ @SamirahSamirah It will show you how to solve these problems.

kendricklamar2014 · Answer

Tag me if your still confused after watching the video :)

samirahsamirah · Answer

okay thank you

kendricklamar2014 · Answer

Your welcome

samirahsamirah · Answer

i just watched this video like not to long ago before i came on here i did not understand a THING @KendrickLamar2014

kendricklamar2014 · Answer

Ok, well can you substitute this: $$m = \frac{ y2 - y1 }{ x2 - x1 }$$
@SamirahSamirah

kendricklamar2014 · Answer

For the first question, we have points: $$(-5,-3) ~ and ~ (5,4)$$

samirahsamirah · Answer

no i did that already lol i'm trying to figure out number 5: (6,-2),m = -3

kendricklamar2014 · Answer

Oh ok, my bad. Let me check the problem.

kendricklamar2014 · Answer

If we have a point, ( x1 , y1 ), and a slope, m, here's the formula we
use to find the equation of a line: $$y - y1 = m(x - x1)$$

samirahsamirah · Answer

using that i got the answer m= -3/4 is that correct

kendricklamar2014 · Answer

Let me solve it..

kendricklamar2014 · Answer

I do not get the same answer as you do. Can you show me your steps? @SamirahSamirah

kendricklamar2014 · Answer

Here are my steps to solve this question: 
$$y - (-2) = -3(x-6) $$
$$y+2 = -3x + 18$$
$$~~~-2~~~~~~~~~~~~-2$$
$$y = -3x + 16$$

samirahsamirah · Answer

i used a calculator :/ well they have a algebra calculator and i used it

samirahsamirah · Answer

@KendrickLamar2014

kendricklamar2014 · Answer

You don't need a calculator. You can do these problems by hand.

samirahsamirah · Answer

they are hard to me @KendrickLamar2014

anonymous · Answer

ok, for number 5, use the point slope formula:
y=mx+b

samirahsamirah · Answer

can you do the first one for me? as an example

anonymous · Answer

ok
m=-3  (6,-2)
y=-3x+b
-2=-3(6)+b
-2=-18+b
b=16
y=-3x+16

samirahsamirah · Answer

sorry computer problems @Lovelarap i'm going to try the next one

anonymous · Answer

@SamirahSamirah it ok. tell me the answer when your done so i can see if it's right

samirahsamirah · Answer

Okay i'm lost now i need a step by step process @Lovelarap

anonymous · Answer

lol
ok, can you do the first step?

samirahsamirah · Answer

Do i do m= 2 (5,-2) first like switch it around from (5, -2) m =-3

anonymous · Answer

no, substitute your points and slope in to this equation:
y=mx+b
ps your looking for b

samirahsamirah · Answer

okay so after that then what?

anonymous · Answer

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