Question

The ordered pairs for two points are listed in the table. What is the equation, in slope-intercept form, of the line that contains these points? A. y = x + 1 B. y = -x – 1 C. y = -x + 1 D. y = x – 1
X Y
1 -2
4 -5

Answer 1

Answer:

B. y = -x – 1

Step-by-step explanation:

calculate slope  =

y2-y1   =  -5- (-2)  =  -3

x2-x1   =   4 - 1     =   3

m (slope) = -3/3 =  -1

using points (1,-2) for calculating y-intercept:

y = mx + b

-2 = -1(1) + b

-2 = -1 + b

-1 = b

b = -1

answer is B   y=  -x - 1