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Science Bowl Question

📅 NSB MS 2007🎓 MS🔄 Round 9#️⃣ Question 5❓ TOSS-UP📝 Multiple Choice

Which of the following is NOT true about slopes:

W) the slope of a line is defined as the ratio of vertical change to horizontal change
X) if 2 non-vertical lines are perpendicular, their slopes are negative reciprocals
Y) parallel lines have the same slope
Z) if a line is parallel to the x-axis, its slope is 1
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