Answer:
Step-by-step explanation:
It'd be wise to say what is represented by each x and y. I will assume that x represents the age of the child in months and y the height in cm.
Then, if the height is 115 cm, 115 cm = 0.58x + 72.27. Must solve this for x:
115 cm - 72.27 cm
x = ---------------------------- = 73.7 cm (about 29 inches, which is reasonable)
0.58
If the child is 30 months old, x = 30 and y (the height) is
0.58(30) + 72.27 cm = 89.7 cm (about 35.3 cm, also reasonable)
