A LINE CONTAINS (9,Y) AND (-6,3). IT HAS A SLOPE 6. FIND Y

The equation of a line between to points (x1,y1) and (x2,y2) with slope can be written

(y2 - y1) = (slope)*(x2 - x1)

The equation of the line must therefore be

Y-3 = 6 [9 - (-6)] = 90
Solve for Y