Question

. A line goes through the points (3, -4) and (-1, 8). write the equation of the line in point-slope form. (Show the steps for how you went from the two points, above, to having the equation in point-slope form.

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Answer 1

Answer: y= -3x + 5

Step-by-step explanation:

y2-y1 divide by x2-x1 = m

therefore you would do 8 - -4= 12 divide by -1 - 3= -4 which gives you 12 divided by -4

m= 12/-4 aka m = -3

and to find the y intercept you should use one of the point coordination to plug it into the formula y=mx+ b

use (-1,8)

8= -3(-1) + b

8= 3+b

subtract 3 from both sides

b= 5

then plug the m and the b into y=mx + b

and you get y= -3 + 5