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intercepts xx2−6x+8
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Solution
XIntercepts:(0,0),YIntercepts:(0,0)
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Function range definition
The set of values of the dependent variable for which a function is defined
Rewrite as
5x+27x2x=y
Simplify 5x+27x2x:5x+214x2
5x+214x2=y
Multiply both sides by x2
5x+214=yx2
The range is the set of y for which the discriminant is greater or equal to zero
Discriminant 5x+214=yx2:25+112y
25+112y≥0:y≥−25112
Check if the range interval endpoints are included