Question

How do you write the equation in slope intercept form given (-1,-2):(0,0)?

Answer 1

`y = 2x`

Explanation:

There are many ways to do it. But, I am poor at remembering many things.

But I can remember that the form is `y = mx+c`. Is it ??

Now, You say it passes through (0,0) ?

So lets put it in the form, with `y=0` and `x = 0`

So, `0 = m*0+c` ?? Wow, that leaves us with `c=0`.

So the form reduces to `y= mx+0 = mx`

Oh!! You said it passes through (-1,-2) as well ?
Great, so `y = -2` and `x= -1`

So we have `-2 = m* (-1)` That means `m =2`

Good, so `y = 2x`.