I really don't get any of these questions.. #1-7

I would give you the answers but then that wouldn't help you, so sorry in advance.

We already know that the slope of a line is rise over run

or y1-y2/x1-x2

But that only gives us the slope

What if we want to have an equation that shows what points it passes through as well

Well, that's basically what slope-intercept is.

We can use this simple formula (simple because there's much more complicated formulas)

y=mx+b where y equals the y coordinate, x equals the x coordinate, m equals the slope, and b is the y-intercept.

As an example, I'll do the first one for you.

y=mx+b

Plug in what we know

y=1x+4

You can simplify this down to

y=x+4, since 1 is identity property.

Then, you make up what x is, and your like "x is 0", if x=0, then y=4, so it'll work like that, but I'm pretty sure you don't have to show that.

And as a treat, I'll do the second one as an example:

y=mx+b

Plug in what we know

y=2x+(-2)

Simplify

y=2x-2

Same thing here, you make up what x is, and your like "x is 0", if x=0, then y=4, so it'll work like that, but I'm pretty sure you don't have to show that.

Hope this helps, let me know if you have any questions,

this was already solved by me with a different person. if you look it up in the search bar at the top of the page, you will get the answer.

step-by-step explanation: