Answer:
1. Commutative Property of Addition
2. Distributive property
Step-by-step explanation:
Given



Required
Justify each step
From Line 1 to 2:
The property from Line 1 to 2 depicts
;
i.e.

This is referred to as Commutative Property of Addition
From Line 2 to 3:
The property here depicts 
i.e.


This is referred to as Distributive property
The total cost of the cab ride was $25.50. The cabbie charges $1.50 per mile the entire trip.
Answer:
In #1, the slope of the line is 3
Step-by-step explanation:
To find the slope of any line, you need to use the points in the slope formula.
m(slope) = (y2 - y1)/(x2 - x1)
m = (5 - 2)/(0 - -1)
m = 3/1
m = 3
This means the slope is equal to 3.