find the equation (3,12) (1,4)

Question

 find the equation of the line below, if neccessary, use a slash to indicate a division bar. i need the equation for the slope numbers (3,12) (1,4)

Answer 1

Slope between two points (x_0,y_0) and (x_1,y_1) is given by rise/run=change in x/change in y= (y_1-y_1)/(x_1-x_0).

 

So the slop between these two lines is (4-12)/(1-3)=-8/-2=4.

 

Using the slope and either point, we can write the line in point slope form:

 

y-y_0=m(x-x_0), where m is the slope...

 

so the line passing through these two points in the plane is given by:

 

y-4=4(x-1) 

or

y-12=4(x-3)

 

Hope that helps!