1. if \(\frac { 4 }{ 5 } \) = \(\frac { 12 }{ ? } \), then ? =

2. if \(\frac { -4 }{ 7 } \) = \(\frac { ? }{ 14 } \), then ? =

3. if \(\frac { -7 }{ 11 } \) = \(\frac { 14 }{ ? } \), then ? =

4. if \(\frac { -3 }{ -5 } \) = \(\frac { 9 }{ ? } \), then ? =

5. if \(\frac { -8 }{ -9 } \) = \(\frac { -16 }{ ? } \), then ? =

6. Which of the following is a negative rational number?

7. Which of the following is a positive rational number?

8. The rational number \(\frac { 12 }{ 40 } \) in standard 40 form is

9. The rational number \(\frac { -21 }{ 28 } \) in standard form is

10. The rational number \(\frac { -6 }{ -25 } \) in standard form is