Two cars are traveling on two different roads that are perpendicular to each other. on a coordinate map, the first started from the point (-3,2) and stopped at (1,-2). the second car started from (-1,-2) and stopped at (3,y). what is the y-coordinate of the final destination of the second car?

Since the roads are perpendicular to each other. And for perpendicular lines, product of slopes is equal to -1 .

So for the first car , with the points ,  (-3,2),(1,-2), slope is

And for the second car, with points (-1,-2),(3,y), slope is

And product of slopes have to be -1, that is

Substituting the values of the two slopes

Multiplying both sides by 4

And that's the missing value of y coordinate .

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