+0  
 
0
74
5
avatar+2308 

plz help

 Nov 27, 2018
 #1
avatar+16286 
+3

I'll show you how to do the FIRST one....you shoyld be able to do the others....

 

(y-y1) = m(x-x1)

(y-4) = 3(x-(-1))

y-4 = 3x +3

y=3x+7      ta - da !       Go RP....try the others....cheeky

 Nov 27, 2018
 #2
avatar+2308 
+1

2) y-y1=m(x-x1)

y-1=1/2(x-6)

y-1=1/2x-3

y=1/2x-2

Am I right?

RainbowPanda  Nov 27, 2018
edited by RainbowPanda  Nov 27, 2018
 #4
avatar+16286 
+2

Correct-o-mundo !

ElectricPavlov  Nov 27, 2018
 #3
avatar+95866 
+2

Thanks, EP !!!

 

Here's another way

 

(1)   m = 3            point = ( - 1, 4)

 

Write the equation as

 

y = slope ( x -   the x coordinate)   + the y coordinate     

 

So we have

 

y = 3 ( x -  -1) + 4

 

y  = 3 ( x + 1) + 4       simplify

 

y = 3x + 3 + 4

 

y = 3x + 7

 

 

cool cool cool

 Nov 27, 2018
 #5
avatar+95866 
+1

Here's (2)  using my method

 

m = (1/2)        point = ( 6, 1)

 

y = slope ( x -   x coordinate ) + y coordinate

 

y = (1/2) ( x - 6) + 1    simplfy

 

y = (1/2)x - 6/2 + 1

 

y = (1/2)x - 3 + 1

 

y = (1/2) x - 2 

 

So....Correct !!!

 

 

cool cool cool

 Nov 27, 2018

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