Answer:
see below for a graph
Explanation:
The linear function is in the form called "slope-intercept form:"
y = mx + b
where m is the slope and b is the y-intercept.
In your function, the slope is 2/7 and the y-intercept is -2. That means the point (0, -2) is on the graph, and the line increases by 2 units for each 7 units to the right. That helps you see that the point 7 units right and 2 units up, (7, 0), is also on the graph.
The graph can be drawn as a straight line through those points.
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Since the line extends to infinity in all directions, the domain and range are both "all real numbers".