Answer: y = -x + 9
Step-by-step explanation:
First, to find the slope of the line we will use: (y₂-y₁)/(x₂-x₁)
Using the two points, we get: (8-1)/(1-8)
Simplify it: 7/-7
Finally, the slope is -1
We can now write: y = -x + b
Next we will plug in a point into the equation we have:
(8,1) --> 1 = -8 + b Then solve algebraically
b = 9
Then finish the equation:
y = -x + 9
