Answer:
y=log_2 (x)
Step-by-step explanation:
We see that the graph passes though the point (2,1). So we can write:
log_a (2) = 1 => a = 2
So it's a log in base 2.
Answer:
3
Step-by-step explanation:
Using the rule of radicals
×
⇔ 
Given

= 
=
× 
= 3
Answer:
The rate of change of a function with respect to a variable.
Step-by-step explanation:
For example: The slope of a constant value (like 3) is always 0. The slope of a line like 2x is 2, or 3x is 3 etc. and so on.