Answer:
y = 3x - 1
Step-by-step explanation:
Rise over run, so 3 over 1 = 3. The y-intercept is -1, so b = -1.
46.3
Why?
7.4+7.2= 14.6
6.3+6.3= 12.6
10.5+8.6= 19.1
14.6+12.6+19.1= 46.3