Cool Down
Write an equation to represent the relationship between the step number and the number of squares in the pattern. Briefly describe how each part of the equation relates to the pattern.
Compare your answer:
or equivalent because there is an -by- array of small squares, which gives , and then there is a row of squares in the lower right.
Is the relationship between the step number and the number of squares a quadratic function? Explain how you know.
Compare your answer:
The relationship is a quadratic function because the number of squares could be expressed as , which is a quadratic expression.