A student finds the slope Of the line between (8, 17) and (1, 4). A.) She mixed up the x- and y-values.

B.) She should have added the values, not subtracted them.

C.) She did not keep the order of the points the same in the numerator and the denominator.

D.) She used y-values where she should have used x-values.

C.

Step-by-step explanation:

The slope formula is y2-y1/x2-x1.

The student in the problem did more like y2-y1/x1-x2.

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step-by-step explanation:

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°