Question

Which lines has a slope of -1/2?
A.)x + 2y = 0
B.)x - 2y = 0
C.)-x + 2y = 0

Answer 1

B

Answer 2

if given a straight line ax+by=c then the slope always :
m = -a/b

Answer 3

B is incorrect

Answer 4

yea i found my error

Answer 5

Another form that is useful is slope-intercept form:
\[y=mx+b\] where \(m\) is slope and \(b\) is y-intercept value. I find this easier to remember, but your mileage may vary.

Answer 6

nothing worse than getting the problem wrong because you remembered the formula with an incorrect sign, or some terms reversed, or some other dumbass mistake like that :-)

Answer 7

I still don't get it

Answer 8

[Find the slope of the line whose equation is 5y = x - 3.

Answer 9

Well it's clearly A.

Answer 10

Okay, we'll go through a few of them.

\[-x+2y=0\]\[2y=x\]\[y=x/2=\frac{1}{2}x\]slope is 1/2

\[x+2y = 0\]\[2y=0-x\]\(y=-x/2 =-\frac{1}{2}x\)
That means the slope is -1/2

Answer 11

I understand the answer but I just dont get the y=mx+b i never did

Answer 12

You don't get why it works, or how I got the equation into that form, or what?

Answer 13

I dont get how to use it and why.

Answer 14

AAAAAAAAAAAAAAAAAAAA I have done this recently

Answer 15

You all are over complicating it

Answer 16

by showing you how to work the problem, we are over-complicating it? okay, whatever...be sure to let us know what the easy way is :-)

Answer 17

Yea but your not even figuring it out or it would have already been solved.