Question

Write an equation in point-slope form of the line having the given slope that contains the given point.

m=-3, (-2,1)

A. y-1=-3(x+2)
B. y-3=-2(x-1)
C. y= -3x+3
D. y+2=-3(x-1)

Answer 1

A

Explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Here m = - 3 and (a, b) = (- 2, 1), thus

y - 1 = - 3(x - (- 2)), that is

y - 1 = - 3(x + 2) → A