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help_people
 one year ago
@mathstudent55
help_people
 one year ago
@mathstudent55

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help_people
 one year ago
Best ResponseYou've already chosen the best response.1Select the equations that are parallel and perpendicular to y = 2x  1 and that pass through the point (4, 1). parallel: y = 2x  7 perpendicular: y = negative one over twox + 3 parallel: y = 2x + 2 perpendicular: y = negative one over twox + four and one half parallel: y = negative one over twox  7 perpendicular: y = 2x + 3 parallel: y = 2x  7 perpendicular: y = negative one over twox  1

help_people
 one year ago
Best ResponseYou've already chosen the best response.1@mathmate @mathmath333

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a is the first set of choices?

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0u should write the options properly to make them more understandable particularly the perpendicular lines

help_people
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433696367134:dw

help_people
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433696418674:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2@help_people Do you know the relationship of the slopes of two parallel lines? Do you know the relationship of the slopes of two perpendicular lines?

help_people
 one year ago
Best ResponseYou've already chosen the best response.1parallel lines have asme slope different yintercepts

help_people
 one year ago
Best ResponseYou've already chosen the best response.1to ahnge to perpinduculat make the slope negative and the reciprocal?

help_people
 one year ago
Best ResponseYou've already chosen the best response.1reciprocal is like 4/1 changef to 1/4

help_people
 one year ago
Best ResponseYou've already chosen the best response.1i am sure you know that was just in case you were going to sake me :D

help_people
 one year ago
Best ResponseYou've already chosen the best response.1is a correct? i know that c and d are not correct

help_people
 one year ago
Best ResponseYou've already chosen the best response.1because of them for parallel they do not have the asme slope

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Let's work on the parallel line first. Given line: \(y = 2x  1\) General equation of line in slopeintercept form: \(y = mx + b\) A parallel line has the same slope as the given line. We need a line with slope 2.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2The parallel line has to have an equation of the form \(y = 2x + b\) since we know its slope must be 2 just like the given line. We are given point (4, 1), so let's plug in (4, 1), and find b. \(1 = 2(4) + b\) What do you get for b?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.22 * 4 = 8, not 6.

help_people
 one year ago
Best ResponseYou've already chosen the best response.18 srry than b=7?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Then subtract 8 from both sides.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Yes. Since we now have b = 7, the parallel line is: \(y = 2x  7\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Now we can work out the perpendicular line in a similar way.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Now for the perpendicular line. Given line: \(y=2x−1\) General equation of line in slopeintercept form: \(y=mx+b\) Perpendicular lines have slopes that are negative reciprocals of each other. The given line has slope 2. What is the negative reciprocal of 2?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Correct. We now insert the new slope in the slopeintercept form. \(y = \dfrac{1}{2}x + b\) Now we insert the know point on the line and solve for b.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2\(y = \dfrac{1}{2}x + b\) \(1 = \left( \dfrac{1}{2} \right) (4) + b\) What is b?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Great. The equation of the perpendicular line is: \(y = \dfrac{1}{2} x + 3\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Now choose the correct choice from the answers.

help_people
 one year ago
Best ResponseYou've already chosen the best response.1is still say a @mathstudent55

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Yes, A is the answer.
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