The line models the temperature staring at noon on a auttum day

SOLUTION:
Step 1:
In this question, we have the following:
Step 2:
From the graph, we can see that:
a. The y-intercept of the function is at:
[tex]y=50^0F[/tex]b. The y-intercept represents the temperature of:
[tex]50^0F[/tex]at the start of the day.