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starrhunter
Group Title
What is the equation of the line that passes through the point (4, 1) and is perpendicular to the line y = –2x + 4?
 2 years ago
 2 years ago
starrhunter Group Title
What is the equation of the line that passes through the point (4, 1) and is perpendicular to the line y = –2x + 4?
 2 years ago
 2 years ago

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Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Do you know pointslope form of the equation of a line?
 2 years ago

starrhunter Group TitleBest ResponseYou've already chosen the best response.0
no i dont know any algebra im trying to help my sister finish her assignments. shes in the hospital. i dont need anyone to teach me anything i just dont want her to fail. any good answers anyone has is greatly appreciated
 2 years ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
Sorry. It is contrary to the code of conduct to just post answers. Too many kids try to avoid learning that way.
 2 years ago

starrhunter Group TitleBest ResponseYou've already chosen the best response.0
could u show me how to work it out then? dont want anyone to get in trouble.
 2 years ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
\[yy _{1}=m(xx _{1})\]
 2 years ago

AsianStudent_01 Group TitleBest ResponseYou've already chosen the best response.1
First, determine the slope of the given line. x + 2y = 6 Solve for y to get this in slopeintercept form. Remember to switch signs when you switch sides. 2y = x + 6 Divide all terms on both sides by 2. y = 0.5 x + 3 So the slope of the given line is the coefficient of x, which is 0.5 = 1/2 The slope of a perpendicular line is the negative reciprocal of that slope, which would be 2. Use the pointslope form to build the equation with the point (4,2) y  y1 = m(x  x1), where (x1, y1) is a point on the line and m is the slope. y  2 = 2(x  4) This is an equation that satisfies the question. To get this into slopeintercept form, expand, simplify and solve for y. y = 2x  8 + 2 y = 2x  6
 2 years ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
That is pointslope form. The given line has slope 2 so the perpendicular has slope 1/2 replace y1with 1, m with 1/2 and x1 with 4 and simplify. That will be the equation of the desired line.
 2 years ago

AsianStudent_01 Group TitleBest ResponseYou've already chosen the best response.1
Yep, take it with a little grain of salt
 2 years ago

starrhunter Group TitleBest ResponseYou've already chosen the best response.0
so what do i have to simplify exactly?
 2 years ago

Keroro Group TitleBest ResponseYou've already chosen the best response.0
dw:1338928449474:dw
 2 years ago

Keroro Group TitleBest ResponseYou've already chosen the best response.0
and make y the subject of the formula
 2 years ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
To simplify, distribute the 1/2 and then add 1 to both sides.
 2 years ago

starrhunter Group TitleBest ResponseYou've already chosen the best response.0
y = 1/2x 1??
 2 years ago

Mertsj Group TitleBest ResponseYou've already chosen the best response.1
I knew you could do it.
 2 years ago
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