Question

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

Answer 1

how do you solve this?

Answer 2

as it is a MC question,
what we can do is to sub x=-4 and y=-3.
Then,
check if LHS =RHS
if yes,
it is the answer

Answer 3

Of course, you also have to check for x=-2 and y=-1

Answer 4

i know the answer is B but i dont understand how to solve it
and i dont understand what your saying

Answer 5

Let me provide you with a detailed solution. (also suit for long questions)
as it is a st. line passes through (-2, -1) and (-4, -3)
slope between these two points is also the slope of the st. line.
slope=(-2-(-4)) /(-1-(-3)) = 2/2=1
y-(-1) / x-(-2) =1
y+1 / x+2 =1
y+1 =x+2
y=x+1

Answer 6

thankss

Answer 7

you are welcome :D