Question

Line passing through (4,-1) and (3,-2)

Answer 1

Answer: y = x - 5

Solution:

Find the slope in order to find the line of equation

m= y2-y1/x2-x1

Take both the coordinates and name it A (4,-1) B(3,-2) for convenience  

m = -2 - (-1) / 3-4

m = -2 + 1 / -1

m = -1 / - 1 >>> m= 1

Now find the y intercept using the equation below

y=mx+ b

where  

y = y coordinate

m= slope

x= x coordinate  

b= y intercept  

SO  

Note: use any of the coordinate the answer would be the same in either case

I will be using the coordinate (4,-1)

y=mx+b

-1 = (4)(1) + b

-1 - 4 = b

-5 = b

y = x - 5