how to write an equation for the line pair of points

tek

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Oct 24, 2006
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write an equation for the line pair of points
(3,8) (2,6)
 
Question make not sense.

Do you have a Two-Point form?

You can calculate the slope: (8-6)/(3-2) = 2

Do you have a Point-Slope form?
 
all it said is to write an equation for the line containing each pair of points.
 
OK Now answer the questions. You must have some way to proceed. If you don't you have bigger problems.
 
1. using the two points, determine the slope between the two points using the slope formula ...

\(\displaystyle \L m = \frac{y_2 - y_1}{x_2 - x_1}\)

2. once you have the slope, use the point-slope form for a linear equation to determine the line's equation ...

\(\displaystyle \L y - y_1 = m(x - x_1)\)

note that \(\displaystyle \L (x_1,y_1)\) can be the coordinates of either point ... your choice.
 
skeeter said:
1. using the two points, determine the slope between the two points using the slope formula ...

\(\displaystyle \L m = \frac{y_2 - y_1}{x_2 - x_1}\)

2. once you have the slope, use the point-slope form for a linear equation to determine the line's equation ...

\(\displaystyle \L y - y_1 = m(x - x_1)\)

note that \(\displaystyle \L (x_1,y_1)\) can be the coordinates of either point ... your choice.

when i did the y2 -y1/x2-x1=3/-5 that right right? do u have divide 3/-5
 
tek said:
write an equation for the line pair of points
(3,8) (2,6)
Next time, be clearer:
2 points (3,8) and (2,6) lie on a straight line.
What is the equation of the line?
 
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