Refer to the graph. A line passes through the points and . If the slope of the line is 3, the missing -coordinate is _____.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to find the missing y-coordinate given the slope and one set of coordinates. The student must use the slope formula and solve for the unknown y-coordinate.
Key Concept Explanation
The slope of a line passing through two points and is given by . Given the slope and one set of coordinates, the student can solve for the missing coordinate.
Step-by-step Solution
1. Identify the known values: ,
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