Question

Please help me- speed

Answer 1

4 km per hour

Explanation:

Use the point (15,1) Since the line is proportional, the slope is y/x or 1/15

1/15 this is in minutes

1/15 x 60/1 To convert to hours

4 km per hour

Answer 2

4 Km per hour

Explanation:

average speed (S) is calculated as

S =
`(D)/(T)` ( D is distance and T is time, in hours )

the distance ( vertical axis ) from her home to the newspaper shop is 1 Km

time ( horizontal axis )

from 09 00 to 09 30 has 6 divisions

then 1 division = 30 minutes ÷ 6 = 5 minutes

time to walk to the shop is 3 divisions = 3 × 5 = 15 minutes

15 minutes =
`(15)/(60)` of an hour =
`(1)/(4)` hour

then average speed from home to newspaper shop is

S =
`(1)/((1)/(4) )` = 4 Km per hour