According to the graph, what is the value of the constant in the equation below?

The given formula is Height = Constant x width

according to the graph, the width is at the bottom, so is the X coordinate which is the first number and the height is the Y , which would be the 2nd number.
 Using one of the points given, lets pick (1, 3.2)

we will fill in the height and width in the formula to get:

3.2 = constant x 1
 
 divide both sides by 1 to get the constant:
 constant = 3.2 / 1
constant = 3.2
 the answer is B

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