A-3b=9
a=b-3
b-3-3b=9
-2b-3=9
-2b=12
2b=-12
b=-6
a=-6-3
a=-9
Solution: (-9,-6)
----
Check:
-9=-6-3
-9=-9
TRUE
<span>2744 I gusse if not tell me</span>
You need to simplify it first.

Use distribution

y=mx+b
m=slope
your slope is -4 :)
The answer would be C. both plane A and B because it's on line s which lies on both planes.
0.808 km, you find the difference between the two numbers