Find the unknown number for each fast array drawing

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

What is the least common factor of 6 and 8