Answer:
مرحبًا ، سأكون سعيدًا لمساعدتك في حبك في العمل ، وأريد المزيد من التفاصيل ، وسأبذل قصارى جهدي لإرضائك
Step-by-step explanation:
I recommend using GeoGebra to graph the coordinates
I use that whenever someone asks if certain coordinates make a shape
Here's the link:
http://contentstore.ple.platoweb.com/content/GeoGebra.v5.0/GeoGebra_Activity.html
B x+31
x=9
subtract 9 from both sides.
-3x = -27
divide by -3
the slope of -9 is -9/1
and the area would be 
.
