
Carol H. answered 11/01/17
Tutor
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Masters' Degree in Mathematics with 35 years of Teaching Experience
y = -3x + 7 has a slope of -3. Parallel lines have equal slopes.
y - y1= m(x - x1)
y - 5 = -3(x + 2)
y - 5 = -3x - 6
y = -3x - 1