A line in the xy-plane passes through the points and . What is the slope-intercept equation of this line?
Answer and explanation
Correct answer: C.
- Step 1: Calculate slope: .
- Step 2: Use point-slope form with : .
- Step 3: Solve for : .
Answer
y = 2x + 1.
Why not the others: '' miscalculates intercept (); '' uses slope 3; '' inverts the slope.
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