Final answer:
To find the missing y-coordinate for the point (2, y) with the function y = -5x - 8, substitute x=2 into the equation to get y = -5(2) - 8, which simplifies to y = -18. Hence, the coordinate pair is (2, -18).
Step-by-step explanation:
Step-by-step Explanation
To determine the missing coordinate value of (2, y) for the function y = -5x - 8, you need to substitute the x-coordinate (which is 2) into the equation and solve for y:
First, plug in x = 2 into the equation: y = -5(2) - 8.
Multiply -5 by 2 to get -10.
Add -10 to -8 to get -18.
Therefore, the value of y when x = 2 is -18.
The complete coordinate pair is (2, -18).