A line is defined by the equation y=2/3x-6. The line passes through a point whose y-coordinate is 0. What is the x-coordinate of
2 answers:
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ANSWER
A. -3, -2, 2, and 3
EXPLANATION
The given polynomial function is,
To find the real roots, we equate the function to zero to obtain;
We can solve this equation as a quadratic equation in
Thus we rewrite the equation as,
We split the middle term to get,
We factor to get,
We factor to get,
Either
or
The correct answer is A
A. -3, -2, 2, and 3
EXPLANATION
The given polynomial function is,
To find the real roots, we equate the function to zero to obtain;
We can solve this equation as a quadratic equation in
Thus we rewrite the equation as,
We split the middle term to get,
We factor to get,
We factor to get,
Either
or
The correct answer is A
