Exercise 19 Page 159

To find the x- and y-intercepts, we have to identify the points at which the line crosses the axes.

The x-intercept is the point where the graph crosses the x-axis, when y=0. From the graph, we can see that this occurs at (3,0).

The x-intercept occurs then at x=3.

The y-intercept is the point where the graph crosses the y-axis, when x=0. From the graph, we can see that this occurs at (0,4).

The y-intercept occurs then at y=4.