Question

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

Answer 1

Answer: A) 20

Step-by-step explanation:

The equation
`\text{Height} = {\text{Constant} \over \text{Width}}` rearranges to
`\text{Constant} = \text{Height}*\text{Width}`

To find the constant, we simply multiply the x and y coordinates of any of the point shown:

• constant = x*y = 4*5 = 20
• constant = x*y = 5*4 = 20
• constant = x*y = 10*2 = 20
• constant = x*y = 20*1 = 20

The general equation is y = 20/x, which rearranges to xy = 20.

Answer 2

B

Step-by-step explanation: