Question

Please help me please

Answer 1

y = mx + b
The m represents your slope.
y = (1)x + b
You can now plug in your coordinate points.
-7 = -7 + b
You will notice that they are equal to each other, which means b can only equal zero.
The equation will be...
y = x + 0
or
y = x

Answer 2

y = x

Explanation:

Hi,

We know that in the equation...

y = mx + b

m = slope

So, to find the equation of the line, we have to plug in what we already know. So...

-7 = 1 (-7) + b

Solve...

-7 = -7 + b

b = 0

That means that your equation is...

y = x

(you don't have to put the one in front of the x)

I hope this helps :)