SOLUTION: Which of the following is the equation of a line that passes through (-2, -1) and (-4, -3)? A. y = 1/2x + 1 B. y = x + 1 C. y = 1/2x – 1 D. y = x – 1

Algebra ->  Graphs -> SOLUTION: Which of the following is the equation of a line that passes through (-2, -1) and (-4, -3)? A. y = 1/2x + 1 B. y = x + 1 C. y = 1/2x – 1 D. y = x – 1       Log On


   

Question 864241: Which of the following is the equation of a line that passes through (-2, -1) and (-4, -3)?
A. y = 1/2x + 1
B. y = x + 1
C. y = 1/2x – 1
D. y = x – 1

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
You can do a quick sketch and avoid any computations, and make a good judgement about which of the available choices fit.

To be sure without sketching a graph: Calculating... m=%28-3-%28-1%29%29%2F%28-4-%28-2%29%29=%28-2%29%2F%28-2%29=1;
In keeping with the form of the choices, y=mx+b, b=y-mx, b=-1-1%2A%28-2%29=1.
This is choice B.