Question

Can someone help me with this

Answer 1

`y = - 2x`

Explanation:

For question 3, the only one, fully visible, read below the explanation.

First of all, find the slope, or gradient, or m.

Should be easy as

`(rise)/(run) = (2)/( - 1) = - 2`

Then, see where the line intersects the y-axis. You should note it is at x=0, meaning the y-intercept is 0.

Knowing this:

`y = mx + c \\ y = - 2x + 0 \\ y = - 2x`

And there you go.