Four cards are drawn in succession, without replacement, from a standard deck of 52 cards. How many sets of four cards are possi
1 answer:
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Answer:
D. Eric is correct; slopes are opposite reciprocals
Step-by-step explanation:
If they were to actually graph the lines, they could see immediately that the lines are perpendicular. Perpendicular lines have opposite reciprocal slopes.
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Solving the first equation for y gives ...
2x +3y = 12
3y = -2x +12
y = -2/3x +4
The slope of -2/3 for this first line is the opposite reciprocal of the slope 3/2 that the second line has.
Eric is correct; slopes are opposite reciprocals (choice D)
