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elizabethlovesyouu
Group Title
PLEASE HELP!
What is the y coordinate of the y−intercept of the line that passes through the points
(−4, −1) and (4, 5)?
 2 years ago
 2 years ago
elizabethlovesyouu Group Title
PLEASE HELP! What is the y coordinate of the y−intercept of the line that passes through the points (−4, −1) and (4, 5)?
 2 years ago
 2 years ago

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mubzz Group TitleBest ResponseYou've already chosen the best response.1
Okay first you need to calculate the equation of the line, for that you need the gradient of the line passing through the two points. \[m = (y _{2}  y_{1}) \div (x _{2}  x_{1})\] where m is the gradient. Using this, you can select any of the points and compute gradient. The gradient is, m = 3/4 Now you use the general form of a linear equation to find the equation of the line: \[y  y_{1} = m(x  x_{1})\] You leave x and y as they are and select ONE of the point sets to be x1 and y1 Hence you get y5 = 0.75(x4) y5 = 0.75x  3 y = 0.75x + 2 Remember, on the y axis, x=0 So the yintercept is 2
 2 years ago

elizabethlovesyouu Group TitleBest ResponseYou've already chosen the best response.0
IM SO GRATEFUL ! THANK YOU SO MUCH! :D
 2 years ago

mubzz Group TitleBest ResponseYou've already chosen the best response.1
no problem :)
 2 years ago
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