The line defined by the equation $y = 3 x + 6$ has the $x$-intercept
and the $y$-intercept .
The line defined by the equation $y = 3.5 x - 7.5$ has the $x$-intercept
and the $y$-intercept .
Hint: The $x$ intercept is the $x$ coordinate of the point where the line intersects the $x$ axis. Similarly, the $y$ intercept is the $y$ coordinate of the point where the line intersects the $y$ axis. Draw the graph of the line if necessary.