y = mx + b slope(m) = -1/7 use either of ur points....(5,1)....x = 5 and y = 1 now sub and find b, the y int 1 = -1/7(5) + b 1 = -5/7 + b 1 + 5/7 = b 7/7 + 5/7 = b 12/7 = b
equation is : y = -1/7x + 12/7....but we need it in standard form...
y = -1/7x + 12/7 1/7x + y = 12/7 x + 7y = 12 <== standard form