Engineering Board Exam Reviewer · Equations of Lines · medium
A line with an inclination of 45° passes through ≤ft(-5/2,-9/2 ). What is the x-coordinate of a point on the line if its corresponding y-coordinate is 6?
- 6
- 7
- 8
- 9
Answer
C. 8
Solution
slope = (45°) = 1. Line: y+9/2=1≤ft(x+5/2 ) y=x-2. Setting y=6 gives x=8.
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