In Exercises 1 & 2, determine which of the lines, if any, are parallel. Explain Line a passes through (-1,4) and (1,5)
Line b passes through (-2,7) and (0,4)
Line c passes through (0,4) and (2, 5)

#2
Line a: 6y = -x +12
Line b: x = 6y + 5
Line c: -6y + x = 5

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.