The function has a minimum at (1,3) is the correct answer.
Answer:

To find this you must find the slope first:

which is, after performing some calculating is -2.
Next you need to set up your eqaution:

when you set it up, and substitute the variables for your slope and points you should get this:


add 2 to both sides

subtract y from both sides
He should divide by 3 because there would be 21 equal pieces total.
Answer:
(x+4)-5=20
Step-by-step explanation: