Which equation represents a line that passes through (-9,-3) and has a slope of -6?

Given the slope and the coordinates of one of points in the line, the equation may be expressed by the slope - intercept form in which the general form is written below. 
 
                                 y - y1 = m(x - x1) 

where m is the slope and x1 and y1 are the abscissa and ordinate of the point, respectively.

Substituting the given values, 
   
                                   y - (-3) = -6(x - (-9)

Simplifying the equation gives, 
 
                                    y = -6x -57

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Step-by-step explanation: