Question

What is the equation in point slope form of the line that passes through the point (-1,-3) and has a slope of 4?

a. y+3=4(x+1)
b. y-1=4(x-3)
c. y-3=4(x-1)
d. y+1=4(x+3)

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 = 4 and (a, b ) = (- 1, - 3 ) , then

y - (- 3) = 4(x - (- 1) ) , that is

y + 3 = 4(x + 1)