A train took 7 hours to complete its journey . For the first 3 hours it's average speed was 155km/h , for the remaining travel , the average speed was 186 km/h , what was the total distance ?

1395km

Explanation:

distance= speed×time

First three hours.

155×3= 465km

Remaining travel

7hours-3hours= 5hours as the time for remaining travel.

5×186= 930km

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14