Question

a team is selling discount cards as a fundraiser. the table shows the number of cards sold and the remaining amount of money needed.

discount cards fundraiser

which word describes the slope of the line representing the data in the table?

• zero
• undefined
• negative
• positive

Explanation:

Identify coordinates from the table

Using the Slope Formula knowledge point

$$ (x_1, y_1) = (10, 875),\quad (x_2, y_2) = (20, 795) $$

Calculate the slope of the line

Using the Slope Formula knowledge point

$$ m = \frac{795 - 875}{20 - 10} = \frac{-80}{10} = -8 $$

Determine the sign of the slope

Since \(m = -8 < 0\), the slope of the line is negative.

Answer:

• zero
• undefined
• negative (Correct answer)
• positive