aishat30
aishat30
30-10-2020
Mathematics
contestada
Please help I’m really stuck
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prnvsarathy
prnvsarathy
30-10-2020
They are perpendicular if you put points (2,1) and (7,4) into x1 y1 you will find the slope of u which is 3/5. 3/5 is the opposite reciprocal of -5/3 proving that the lines are perpendicular! Enjoy
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