Personal Savings and Consumer Credit: Part One — Test

Question 15 • Advanced Financial Algebra

Each table represents a linear function. Which linear function has a positive slope?

Answer

Table with 2 columns and 3 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, '0'; Column 2, '2' Row 3: Column 1, '1'; Column 2, '4'

Table with 2 columns and 3 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, '0'; Column 2, '3' Row 3: Column 1, '1'; Column 2, '2'

Table with 2 columns and 3 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, '0'; Column 2, '1' Row 3: Column 1, '1'; Column 2, '0'

Table with 2 columns and 3 rows.Row 1: Column 1, 'x'; Column 2, 'y' Row 2: Column 1, '0'; Column 2, '5' Row 3: Column 1, '1'; Column 2, '5'

Explanation

For each table, compare how y changes when x increases from 0 to 1. In choice A, y increases from 2 to 4, so the slope is (4 − 2) ÷ (1 − 0) = 2, which is positive. Choice B has slope 0, while C and D have negative slopes.

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