A line with equation ax + by = 3 passes through (6, 3) and (-1, -1). Find a and b without finding the slope.

A line with equation $ax + by = 3$ passes through (6, 3) and (-1, -1). Find a and b without finding the slope.

A. a = 4, b = -7 C. a = 2, b = -4
B. a = 3, b = 6 D. a = 4, b = 4

Solution