If the equation h = 64.9+0.635a gives the mean height, in centimeters, of a sample of children from Kalama , Egypt as a function of their age in months, what are the units of 64.9

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justaguide eNotes educator| Certified Educator

The equation h = 64.9 + 0.635a gives the height of the children from Kalama, Egypt as a function of their age in months.

64.9 has the units centimeter. 0.635a too has the units centimeter. When the two are added the result has units centimeter and is the height of the children as a function of their age in months. a is the numeric value of their age in months.

64.9 in the given equation has the units centimeter.