Question

write an equation in point-slope form that describes the line with a slope of -3 that contains the point (1,2).

Answer 1

Y - y1 = m(x-x1)
y - 2 = -3(x - 1)

Answer 2

Point-slope form is

y - y1 = m(x - x1)  where m = slope and (x1, y1) is a point on the line.

so here it is   y - 2 = -3(x - 1) Answer