(5-5) x
It is different because when you distribute the x it will make it 5x-5x while all the other equations are 5-5x
Answer:
k = 11
Step-by-step explanation:
Given the points are collinear then the slopes between consecutive points are equal.
Using the slope formula
m = 
with (x₁, y₁ ) = (5, 1) and (x₂, y₂ ) = (1, - 1)
m =
=
= 
Repeat with another 2 points and equate to 
with (x₁, y₁ ) = (1, - 1) and (x₂, y₂ ) = (k, 4)
m =
, then
=
( cross- multiply )
k - 1 = 10 ( add 1 to both sides )
k = 11
1.425 and 17.57 satisfy the equation.
Answer: y-8=-1(x+3)
the formula for pain-slope form is:

(where

=a known y coordinate &

=a known x coordinate.
Now just plug in the data...
y-8=-1(x--3)
y-8=-1(x+3)