-6/7 = -x/84
84/7 = 12
12(-6) = -72
x = -72
So, -6/7 = -72/84 because -72/84 simplifies to -6/7
By=x+2, as this is the only equation that shows the relation between 2 variables
The point-slope form:

- given point
- given slope
The standard form:

<em>use distributive property</em>
<em>add
to both sides</em>
<em>subtract
from both sides</em>
<em>change the signs</em>

4z>-60
divideby 4
z>-15
x+19 <=-5
subtract 19 from each side
x<= -24