Answer:
m=5
Step-by-step explanation:
Y2-Y1
m= ______
X2-X1
X1= 3
Y1= 15
X2= 9
Y2= 45
45-15 30
____= ____
9-3 6
30/6=5
m=5
Answer:
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Hopefully, this helps you!!

Answer:
For the first question is 8y, and the second question would be 80
Step-by-step explanation:
The perimeter of a shape is calculated by adding it's sides together, and 2y+2y+2y+2y=8y. If y=10, we can substitute y for 10 in which 8*10 is 80.
29.6+73+33=135.6 180-135.6=44.4