What is the slope of the line through and ?
Answer and explanation
Correct answer: B. 3
- Step 1: State the slope formula: .
- Step 2: Substitute and : .
- Step 3: Simplify numerator and denominator: .
Answer
.
Why not the others: - 4 adds rather than subtracts the constant term in the final step. - -3 introduces an extraneous negative sign. - 1/3 inverts the slope formula as .
Practise more Lines and slope.
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