7. What is the length of the line segment between A(–5, 8) and B(7, 8)?
A. 2 units
B. 3 units
C. 12 units
D. 13 units
8. Which set of output values correctly completes the function table?
A. 20, 48, 128
B. -20, 48, 128
C. -20, 46, 126
9. Which set of output values correctly completes the function table?
A. 4, 5, 3
B. -8, -7, 3
C. 8, 7, 3
(The first image is for 8 and the second image is for 9)
Thanks!

7) C

8) B

9) C

Step-by-step explanation:

7) sqrt[(8-8)² + (-5-7)²] = 12 units

8) y = 4x

9) y = 6 - x

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°