Answer
$(1, 0)$
$(a, 1)$
$(\frac{1}{a}, -1)$
Work Step by Step
RECALL:
Every logarithmic function with base $a$ will pass through the following points:
$(1, 0)$, $(a, 1)$, and $(\frac{1}{a}, -1)$
Thus, the missing expressions in the given statement are:
$(1, 0)$;
$(a, 1)$;
$(\frac{1}{a}, -1)$