Napisz równanie prostej A(5,2) B(4,−1)
y=ax+b
2=5a+b
-1=4a+b
1=-4a-b
-------------+
a=3
b=-13
y=3x-13
____________+
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y=ax+b
2=5a+b
-1=4a+b
2=5a+b
1=-4a-b
-------------+
a=3
a=3
b=-13
y=3x-13
y=ax+b
2=5a+b
-1=4a+b
2=5a+b
1=-4a-b
____________+
a=3
a=3
b=-13
y=3x-13