Lengths' of
forehand (in cm)
45.5
35
45
Height ‘y
(in inches)
65.5
56
The data in the adjacent table depicts the length
of a woman's forehand and her corresponding
height. Based on this data, a student finds a
relationship between the height (y) and the
forehand length(2) as y = ar +b, where a, b
are constants.
(i) Check if this relation is a function.
(ii) Find a and b.
65
69.5
74
Lord Mathematics
Answers
Answered by
4
Answer:
its is a function
a = 0.9
b = 24.5
Step-by-step explanation:
Length'x' of forehand (in cm )45.5, 35 , 45
height 'y' (in inches) 65.45, 56, 65
then 0.45 = 0.5a
=> a = 0.9
56 = 0.9 *35 + b
=> b = 24.5
y = 0.9x + 24.5
65.45 = 0.9*45.5 + 24.5 = 65.45 TRUE
56 = 0.9*35 + 24.5 = 56 TRUE
65 = 0.9*45 + 24.5 =65 TRUE
Here its is a function
a = 0.9
b = 24.5
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