As x increases, y decreases. You can see the line curve downward which shows the y value decreases as the x value increases.
The rate of change for y as a function of x is not constant, therefore the function is nonlinear. I’m not really sure about this one but I think this might be the answer.
The y intercept of the graph is the function value y = 8. U can look and see the line touches the 8 on the y axis.
When x = 1, the function value y = 5. U can look at the 1 on the x axis and look up to see the line goes on the 5.
Hope this helped