Algebra-1

Question Analysis
This question tests the student's ability to use the slope formula to find a missing -coordinate. The problem provides one point, the slope, and asks for the missing -coordinate.

Key Concept Explanation
The slope of a line passing through two points and is given by . Here, the slope is 3, and the points are and . The student needs to solve for .

Step-by-step Solution
1. Identify the known values:

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