Find the slope-intercept equation of the line that has the given characteristics.
Slope -3 and y-intercept (0,9)
The slope-intercept equation of a line is given by the formula y = mx + b, where m is the slope and b is the y-intercept.
Since the slope is -3 and the y-intercept is (0,9), we can substitute these values into the equation to find the slope-intercept equation:
y = -3x + 9.