5 4
3
2
1
5 4 -3 -2 -14
2
3 4
5
Х
L2
-3
-4
-5
Why is Li incorrect in saying that the graph shows a direct variation?

The graph does not have a constant rate of change.

When the x-value is 0, the y-value is 1

The slope is negative.

The relationship is proportional.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

1/4 because there is 4 grades.

17

step-by-step explanation:

51/3=17

thus 17 is your answer.