What is the slope of the line that passes through (4,1) and (7,-2) ? a. 1 b. -1 c. -1/3

I say C. It is definitely not A or B because it is a negative slope and the slope is a fraction that does not reduce to 1.

Humans increased food production by farming.

Answergoogle earth; i believe this is the correct answer, plz check first;