Loading [MathJax]/jax/output/CommonHTML/jax.js
Solution

The table shows three values of x and their corresponding values of y for the linear relationship between x and y. The x-intercept occurs at x=−4. The number d is a negative constant, and k is a constant. We are tasked with finding the value of dk.

Solution:

The equation for the slope of the line is given by:

slope=y2−y1x2−x1

Using the points (−7,d+3) and (−4,4k+6d):

(4k+6d)−(d+3)−4−(−7)=8−(4k+6d)(1−3d)−(−4)

Equating the two slopes:

−d−33=85

Cross-multiply and simplify:

(−d−3)(−3d+5)=24 3d2+4d−39=0

Solving for d using the quadratic formula:

d=−4±√42−4(3)(−39)2(3)=−4±√4846 d=−4±226

Since d is negative:

d=−133

Substituting d into the equation 4k+6d=0:

4k+6(−133)=0 4k−26=0 k=132

Finally, calculate dk:

dk=(−133)⋅132=−1696

Answer: B) −1696