Question

Can someone check my answer

http://prntscr.com/bkhtfy

Answer 1

yes you just do \[m = \frac{ y_2 - y_1 }{ x_2-x_1 } = \frac{ f(x_2)-f(x_ 1)}{ x_2-x_1 }\]

Answer 2

Thanks. Was the answer I put correct?

Answer 3

(12-0)/(4-0) = 3 ...

Answer 4

Correct.