The graph illustrates a linear function, because the graph is a straight line
The equation of the graph is <em>(d) y = x +3</em>
The points on the line are:


First, we calculate the slope (m)

Substitute values for x1, x2, y1 and y2

Simplify

Divide

The equation of the line is then calculated using the following formula:

Substitute values for m, x1 and y1

Simplify

Open bracket

Hence, the equation of the graph is <em>(d) y = x +3</em>
Read more about linear graphs at:
brainly.com/question/20853486