Question

What is the point-slope form of a line with slope that contains the point (-2, 1)?

A. y + 1 = 4/5 (x - 2)
B. y - 1 = 4/5 (x + 2)
C. y + 1 = 4/5 (x + 2)
D. y - 1 = 4/5 (x - 2)

Answer 1

Coordinates are given in (x , y), the easiest way to solve this problem is plug in -2 for x and 1 for y and see if both sides are equal.

Answer 2

For example A:
(-2,1)
-2 = x , 1 = y
y + 1 = 4/5 (x - 2)
-2 + 1 = 4/5 (1 - 2)
-1 = -4/5
This isnt true so we can eliminate A.

Answer 3

sorry it froze on lost connection on here. So how would i know if its true ?

Answer 4

oh and it should be with slope 4/5*

Answer 5

If one side equals the other it passes through the point.

Answer 6

im so confused with this

Answer 7

@Will.H