+0  
 
0
38
4
avatar+2291 

I dont get this

RainbowPanda  Nov 27, 2018
 #1
avatar+92814 
+2

OK, RP....you have already done this without realizing it...

 

Slope of given line = -4        point ( 1, -2)

 

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

 

y = -4 ( x - 1) + (-2)

 

y = -4x + 4 - 2

 

y = -4x + 2

 

 

cool cool cool

CPhill  Nov 27, 2018
 #3
avatar+2291 
+1

thank youuu

RainbowPanda  Nov 27, 2018
 #4
avatar+92814 
+1

And thanks to EP, too !!!

 

 

cool cool cool

CPhill  Nov 27, 2018
 #2
avatar+14579 
+3

Let's write the equation we are looking for as

 

y= mx + b       the slope of the original equation is  -4

y=-4x + b        Substitute in the point 1,-2 to calc 'b'

-2 = -4(1) + b

2=b

 

so     y = -4x + 2

ElectricPavlov  Nov 27, 2018

19 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.