Look at the tables below. Determine whether each of them is showing a proportional relationship.

a

$1$1 | $2$2 | $3$3 | $4$4 | $5$5 |

$2$2 | $4$4 | $6$6 | $8$8 | $10$10 |

Proportional

A

Not proportional

B

Proportional

A

Not proportional

B

b

$0$0 | $0$0 |

$1$1 | $7$7 |

$2$2 | $14$14 |

$3$3 | $6$6 |

$4$4 | $28$28 |

Proportional

A

Not proportional

B

Proportional

A

Not proportional

B

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Solve problems involving ratios, rates, and directly proportional relationships in various contexts (e.g., currency conversions, scale drawings, measurement), using a variety of methods (e.g., using algebraic 15 20 x 4 reasoning, equivalent ratios, a constant of proportionality; using dynamic geometry software to construct and measure scale drawings)