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anonymous
 one year ago
What is the equation in pointslope form of the line passing trhough (0,2) and (1,5)?
y  5 = 3(x1)
y  2 = 3(x0)
y +2 = 3(x+1)
y + 5 = 3(x+1)
I solved the equation using point slope form for a linear equation and I did it twice, one for each set of coordinates and I got A and B. I just don't know which one to choose that'll be right since I got both answers.
Help please?
anonymous
 one year ago
What is the equation in pointslope form of the line passing trhough (0,2) and (1,5)? y  5 = 3(x1) y  2 = 3(x0) y +2 = 3(x+1) y + 5 = 3(x+1) I solved the equation using point slope form for a linear equation and I did it twice, one for each set of coordinates and I got A and B. I just don't know which one to choose that'll be right since I got both answers. Help please?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0find the slope first.....slope(m) = (y2  y1) / (x2  x1) (0,2).....x1 = 0 and y1 = 2 (1,5)...x2 = 1 and y2 = 5 slope(m) = (5  2) / (1  0) slope(m) = 3/1 or just 3 Now use point slope form y  y1 = m(x  x1) slope (m) = 3 you can use either of your points using (0,2).....x1 = 0 and y1 = 2 y  y1 = m(x  x1) y  2 = 3(x  0) using (1,5)...x1 = 1 and y1 = 5 y  y1 = m(x  x1) y  5 = 3(x  1) so your only possible answers are : y  2 = 3(x  0) and y  5 = 3(x  1) so B is not correct because the 3 is not negative understand ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ops, sorry. I knew that it wasn't B  I meant to say it's either A or C. The answers I got were... y  2 = 3(x0) > that was for the corrdinates (0,2) y  5 = 3(x1) > that was for coordinates (1,5) I just don't know what to do know since I can't have two answers.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0anything with a 3 as the slope will not work. Thus leaving only 2 answer choices...and 1 of them is y + 2....not an answer choice. So A is the only correct one.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I mean, in your answers that you arrived at....there is no y + 2...so C is wrong

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait a minute. It's A, sorry. I've been looking at numbers for too long. I got mixed up. Thanks for helping me out :)
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