R=23 because its slope the formula is Y-Y/X-X
Answer: y= -x +4
negative slope because our graph goes down as we go right.
+4 indicating how high on our y axis we go up/down
Hello,
Please, see the attached file.
Thanks.
Answer:

Step-by-step explanation:
Part A ;

Part B ;

Answer:
30
Step-by-step explanation: