The y-intercept of the line is 6.
The gradient of the line is 2.
The line passes through the point (0, 6) and the y-intercept is the point
where the line crosses the y-axis, which is always at x = 0.
The gradient is calculated by finding the change in y divided by the change
in x between the two points.
In this case, the change in y is -6 (from 6 to 0) and the change in x is 3
(from 0 to -3).
Therefore, the gradient is -6/-3 = 2.
Therefore, the equation of the line is y = 2x + 6.
The y-intercept of the line is 6.
The gradient of the line is 2.