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23.10.2020 •
Mathematics
Which point is located in quadrant IV?
(–2, –4)
(–2, 4)
(2, –4)
(2, 4)
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Ответ:
The correct point is (C). (2, -4).
Step-by-step explanation:
Ответ:
1) the line parallele to ox passing by (1,4) has for equation y=4
f(x)=4 if -1<=x<=1
2) the line pasing through (3,2) and (5,4) has for equation:
y-2=(4-2)/(5-3)(x-3)
==>y=x-3+2
==>y=x-1
f(x)=x-1 if 3<=x<=5.