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SOLUTION:
Case: Equation of line
Method:
Slope-intercept form:
y= mx + b
when (x,y) is (3,6)
6 = m(3) + b
6= 3m + b...........(1)
when (x,y) is (1,-2)
-2 = m(3) + b
6= 3m + b...........(1)