Question

Determine the limit graphically. Confirm algebraically.

Answer 1

I'm using this as an example. I don't understand how they got 1/4 from (t-1)/(t+2).

Answer 2

direct substitution

Answer 3

since the line is approaching this value from both sides, to find the limit you just plug in whatever x value is being approached

Answer 4

I was mixing the number x was approaching with another one. My confusion was all just a silly mistake. Thanks. :)