Sangeetha Pulapaka

STEP 1: Locate the lowest temperature on the y-axis

The lowest temperature is at 19^\circ

STEP 2: Now move to the point where it intersects the graph

STEP 3: Now move down where it intersects the x-axis

You intersect the x-axis at Thursday. So, the lowest temperature was 19^\circ which was on Thursday.

Skills you may want to recall:

What is a function

How can we tell if the graph given is a function or not?