Find an equation of the line that goes through the points (3,8) and (-1,-4). Write your answer in the form y=mx+b

  y = 3x -1

Step-by-step explanation:

The 2-point form of the equation for a line is a good place to start:

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

  y = (-4-8)/(-1-3)(x -3) +8

  y = (-12/-4)(x -3) +8

  y = 3x -9 +8

  y = 3x -1 . . . . the equation of your line

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: