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,

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation: