asked 65.2k views
4 votes
Sep 09, 6:17:21 PM

What is an equation of the line that passes through the points (2, - 7) and (8, -4)?
Put your answer in fully reduced form.

asked
User Sheronda
by
7.6k points

1 Answer

4 votes

Answer: y = 1/2x -8

Explanation:

The equation will be in slope intercept form which uses the formula y= mx +b where m is the slope and b is the y-intercept and those are the only numbers need to write the equation.

The points are (2,-7) (8,-4) to find the slope using these points,find the change in their y values and divide it by the change in the x values.

-7- (-4) = -3

2 - 8 = - 6

-3/-6 = 1/2

So in this case the slope is 1/2, now input it into the equation and use one of the points coordinates to solve for b the y intercept.

-7 = 1/2(2) + b

-7 = 1 + b

-1 -1

b = -8

The y intercept is -8 so we will have the equation y = 1/2x -8

answered
User FractalDoctor
by
8.6k points
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