Question

A line with a slope of –5 passes through the point (9, –8). What is its equation in point-slope form?

Answer 1

Use point-slope form y − y1 = m(x − x1) with m = −5 and (x1,y1) = (9,−8):

y − (−8) = −5(x − 9),

so y + 8 = −5(x − 9).