How to write an equation with 2 points?
2007-10-31 10:20 pm
How to write an equation with 2 points? lets say we have (2, 4) (5, 2), how you write an equation out of that?
回答 (1)
2007-10-31 10:32 pm
✔ 最佳答案
First find the gradient of the line where these 2 points lie on, using the Point Slope formula:(4-2) / (2-5) = -2/3
Then apply the point slope formula again by choosing a point e.g. (2,4)
use (y - 4) / (x - 2) = -2/3
3 (y - 4) = -2 (x - 2)
3y - 12 = -2x + 4
2x + 3y - 16 = 0
The equation is 2x + 3y - 16 = 0
參考: me
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