Answer:
0.512 goals per game
Explanation:
Given:
The number of games is represented by 'x' and number of goals is represented by 'y'.
Now, 'y' varies directly with x and at a constant rate.
A direct relationship line is given as:

Where, 'm' is the constant rate of change.
Now, for

So, a point on the line is given as (82, 42).
Plug in the given values in the above equation and solve for 'm'. This gives,

Therefore, Keith scores at a constant rate of 0.512 goals per game.