At what value of does the line cross the -axis?
Answer and explanation
Correct answer: B. 1.5
- Step 1: The line crosses the -axis where .
- Step 2: Solve : , so .
Answer
1.5.
Why not the others: -3: This is where the line crosses the -axis, at . 2: This is the gradient, not a coordinate. -1.5: This has the correct size but the wrong sign; .
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