Select the correct graph of -x - 2y = 6.

Question

anonymous · Answer

it is one of these

anonymous · Answer

i dont know which graph though :(

.sam. · Answer

First try arranging that equation to the form y=mx+c

anonymous · Answer

i dont understand though

.sam. · Answer

y=mx+c tells you almost everything, but you'll have to get something similar to that first, so

-x - 2y = 6
add add x to both sides

-2y=x+6
Then, divide -2 both sides,

$$y=-\frac{x}{2}-3$$
You've got something similar to y=mx+c,  c is the y-intercept, which means where the line touches the y-axis. and 'c' here is -3, so, the answer should be C or D

anonymous · Answer

so they answer is c or d but you dont know which?

.sam. · Answer

Well you'll have to find it yourself :p ,Try letting 'y' equals zero (this is where the line touches the x-axis),
$$-\frac{x}{2}-3=0$$
$$-\frac{x}{2}=3 \ \ x=-6$$

.sam. · Answer

The line touches the x axis at x=-6, so, which answer would it be?

anonymous · Answer

Sam i dont know i really dont ;(

.sam. · Answer

Come on its so easy, its right infront of you, the line touching the horizontal line at -6

anonymous · Answer

no it is not touching this -6

.sam. · Answer

Um it is, but you can't see it, lol

anonymous · Answer

haha

.sam. · Answer

This http://assets.openstudy.com/updates/attachments/52305d6fe4b012524e87712b-angelina%253C3-1378901396799-04_04_q14d.gif

anonymous · Answer

damn i was gonna say D too