What is the equation of the line passing through and ?
Answer and explanation
Correct answer: A.
.
- Step 1: Calculate the slope: .
- Step 2: Use point-slope form with :
- Step 3: Solve for : .
Answer
.
Why not the others: '' inverts the slope as ; '' uses the -coordinate of the point as the -intercept; '' forgets the negative sign on the slope.
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