Use the slope formula. Y2-Y1/X2-X1. Give each coordinate a label. (X1,Y1), (Y2,Y1). Then plug the numbers in and solve. 4-1/9-12. So 3/-3, which equals -1.
Answer:
y=120-4x
Step-by-step explanation:
Here we are given the average speed for Day 1 and Day 2 and the time of ride . We asked to Find an expression to determine the total distance travelled in two days.
Day 1 :
Avg Speed = 8 mph
Let the time for travelling = x hrs
Hence Distace Travelled D1= Speed x Time
D1=8x
Day 2 :
Avg Speed = 12 mph
Total time of travelling for two days is given as 10 hours . Hence the time of travelling for day 2 is
= (10-x) hrs
Hence Distance travelled in Day 2 D2 = speed x time
D2 = 12(10-x)
D2=120-12x
Total Distance travelled = D1 + D2
= 8x+120-12x
=120-4x
If the total distance travelled is denoted by y
The expression will be
y=120-4x
-2/4
Move down 2 and to the right 4 times
Sin60=x/44
44sin60=x
X=38.1
I think that car travelled 128 km in one hour and 384km in 3 hours
