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Write the equation of the line passing through point (2,3) and is perpendicular to y=4x+7 in standard form.
I got 4x+y=11; is it right?
 one year ago
 one year ago
Check my answer? Write the equation of the line passing through point (2,3) and is perpendicular to y=4x+7 in standard form. I got 4x+y=11; is it right?
 one year ago
 one year ago

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hartnnBest ResponseYou've already chosen the best response.1
yes, so slope of perpendicular line ?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
the product of slope of perpendicular lines = 1
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
so m1 * m2 = 1 m1 = 4, m2= ?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
no, slope of perpendicular line will be negative *reciprocal*
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
so m1*m2 = 1 4m2=1 m2 = 1/4 ok ?
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
ohk sorry I'm not really good at this I just learned this
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
so now u have slope of required line and a point on it, which equation will u use ?
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
pointslope form? yy1=m(xx1)
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
thats correct! so what u get ?
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
y(3)=1/4(x2) ?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
correct :) now simplify....
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
y(3)=1/4x  idk/: 0.5?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
(1/4)(2) = +2/4 = +0.5
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
oh wait.. y+3 = 1/4x  0.5 then would you add 1/4x to the left side? since I have to write it in standard form? ax+by=c?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
1) its y+3 = 1/4x + 0.5 2) yes., add 1/4 x , not 1/4 x
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
ohk so .. 1/4x+y+3=0.5 then add subtract 3 on both sides?
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
or u could first multiply by 4 on both sides
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
oh yeah.. sorry.. and oh ohk if i did that it would be x+y=2
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
let me show you steps: y+3 = 1/4x + 0.5 y+1/4 x +3= 0.5 multiplying 4 on both sides 4y+ x + 12 = 2 now can u solve ahead
 one year ago

hartnnBest ResponseYou've already chosen the best response.1
you will subtract 12 from both sides, right ?
 one year ago

Steph_Rawr352Best ResponseYou've already chosen the best response.0
yeah thank you though! (:
 one year ago
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