Answer:
1. a
2a. 181, 179, 177, 175, 173
2c. There is a constant slope of -2
Step-by-step explanation:
1. Only one with a constant slope. Remember rise over run (y/x)
2. 0 term is your initial 181 and decrease by 2 from there. the y value decreases by 2 and increases the x value by 1. y=-2 & x=1