Question

This graph relates the radii of circles to their approximate circumferences.

Radii and Circumferences of Circles
On a coordinate plane, the x-axis is labeled Radius (in centimeters) and the y-axis is labeled Circumference (in centimeters). A line goes through points (0, 0), (1, 6.28) and (2, 12.56).


According to the graph, which must be true?
When the circumference is approximately 4 cm, the radius is 25.12 cm.
When the radius is 5 cm, the circumference is approximately 28.26 cm.
When the circumference is approximately 5 cm, the radius is 28.26 cm.
When the radius is 4 cm, the circumference is approximately 25.12 cm.

Answer 1

When the radius is 4 cm, the circumference is approximately 25.12 cm.

Explanation:

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Answer 2

When the radius is 4 cm, the circumference is approximately 25.12 cm.

Explanation:

We see a multiple pattern of y = ( 5.28 (x1) + 1 )

when x = 1 we (x1) +1

When x = 2 we (x2)+2

when x = 3 we (x3)+3

when x = 4 we (x4) : y = (5.28 x4) + 4 = 25.12