Converting To standard form help please

[funnygrlhaha]

Ok so I need to figure out if these two equations are perpendicular parallel or neither. The only thing is I can't figure out how to convert the second problem to standard form.
-x-y=-1
y+x=7

Thanks for any help you can give me

 

[Mrspi]

Ok so I need to figure out if these two equations are perpendicular parallel or neither. The only thing is I can't figure out how to convert the second problem to standard form.
-x-y=-1
y+x=7

Thanks for any help you can give me

I think you probably want to convert them to slope-intercept form, which is

y = mx + b

Note that y is by itself on one side of the equation, and everything else is on the other side.

Let's look at an example problem.

2x + y = 5

How would you get y by itself on one side? Well, you could get rid of the x term on the left side by adding its opposite, and remember that what you add to one side, you must add to the other side:

2x + y + (-2x) = 5 + (-2x)
Since 2x + (-2x) is 0, and y + 0 is just y, we have

y = -2x + 5

There it is....slope-intercept form. In this form, the coefficient of x is the slope (so this line has a slope of -2), and "b" is the y-intercept (this line has a y-intercept of 5).