Two cars are traveling on two different roads that are perpendicular to each other. on a coordinate map, the first car started from the point (-5,-8) and stopped at (2,7). the second car started at (-5,1) and stopped at (10,y).

the y-coordinate of the second car is

Step-by-step explanation:

slope of first road

The y-coordinate of the second car is -6.

Step-by-step explanation:

Given : Two cars are traveling on two different roads that are perpendicular to each other.

Slope of first car started from the point (-5,-8) and stopped at (2,7):

Slope of second car started at (-5,1) and stopped at (10,y) :

Since both cars perpendicular, then the product of their slope is equals to -1.

Hence, The y-coordinate of the second car is -6.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.