First blank options: does not change or change 2nd blank options: a constant, a decreasing, or an increasing 3rd blank options: can or cannot 4th blank options: is or is not PLEASE do 27 also

As given by the question
There are given that the graph.
Now,
For finding the linear function, first choose two points from the graph.
Then,
The point is:
[tex](1,\text{ 1) and (2, 2)}[/tex]Then,
Find the slope of the given line:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Then,
[tex]\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{2-1_{}}{2_{}-1_{}} \\ m=\frac{1}{1} \\ m=1 \end{gathered}[/tex]Now,
From the equation of the two-point form:
[tex]y-y_1=m(x-x_1)[/tex]Then,
[tex]\begin{gathered} y-y_1=m(x-x_1) \\ y-1_{}=1(x-1_{}) \\ y-1_{}=x-1_{} \\ y-1-x+1=0 \\ y-x=0 \\ y=x \end{gathered}[/tex]hence, the correct answer is yes, the given function is linear.