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Which expression can be used to calculate the rate per second at which the machine launches the balls? (4,20) (8,40) (12,60) (16,80)

Respuesta :

5 because 20 divided by 4 is 5, 40 divided by 8 is 5, 60 divided by 12 is 5 and 80 divided by 5 is 16.
Hello.

The expression can be found by using the slope formula. 

The expression used to calculate the rate per second at which the machine launches the ball is 40x.