A line passes through the points open paren 9 comma 30 close paren and open paren 18 comma 30 close paren Which statement is true about the line?

The slope is the change in y divided by the change in x. Between (9, 30) and (18, 30), the y-values change by 30 − 30 = 0, while the x-values change by 18 − 9 = 9. So the slope is 0 ÷ 9 = 0, making the true statement “It has a slope of zero because the change in the y-values is 0.”

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