The function y = -x - 1 and y = ½x + k intersect at the point (-2,1). Find the value of k.
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Let the height of the person with shoulder width of 18.5 be = x
As given, A person who is 64 inches tall has a shoulder width of 16 inches.
So, we have to find the height when the shoulder width is 18.5 inches.
We can relate these two by ;
Hence, the height of the person should be 74 inches.