Question

What is the equation of a line that is perpendicular to y=2x+4 and passes through the point (4,6)?

A. y=1/2x+4
B. y= -1/2x+4
C. y= -1/2x+6
D. y=-1/2x+8

Answer 1

I'll give medal to whoever helps!!

Answer 2

i would say B

Answer 3

i dont know if its right or not

Answer 4

but its the answer i got

Answer 5

did you get it right or when you do please tell me

Answer 6

I'll know at the very end of the work. @jakashaka123

Answer 7

perpendicular are lines that make 90 degrees so

Answer 8

@jakashaka123: Please do not just give out answers, especially not if you yourself are not sure how to solve the problem at hand. It's your job to give the person asking the question just enough guidance so that that person can solve the problem himself / herself.

Answer 9

yes i know

Answer 10

i was getting there

Answer 11

morgan: what is the slope of the given line, y=2x+4 ?

Answer 12

thank you mathmale

Answer 13

@mathmale 2?

Answer 14

Right. Now here's how the slopes of a line and of a line perpendicular to the first line are related:\[m _{2}=-1/m _{1}\]

If the given line, y=2x+4, has slope 2, find the "negative reciprocal" of that by folling thie above formula.

Answer 15

I got D for the answer but I'm not sure if that is right or not

Answer 16

@mathmale

Answer 17

Or would it be B? @mathmale

Answer 18

Morgan, my goal is to help you understand the principles involved here and to learn how to do future problems of this nature by yourself. For that reason, i do not respond to "would it be B?" questions. Given that the slope of the original equation is 2, what is the negative reciprocal of that slope? Your result will be the slope of any line that is perpendicular to y=2x+4.