What are the values of a, b, and c in the quadratic equation 0 = x2 – 3x – 2?
2 answers:
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9514 1404 393
Answer:
W'(1,-5), X'(6,-3), Y'(1,-1), Z'(-4,-3)
Step-by-step explanation:
Reflection over the x-axis changes the sign of the y-coordinate. The x-coordinate remains unchanged.
The reflected points are ...
W'(1,-5), X'(6,-3), Y'(1,-1), Z'(-4,-3)
<h3>Answer: Choice A</h3>
- Domain: x > 4
- Range: y > 0
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Explanation:
We want to avoid having a negative number under the square root. Solving leads to
So it appears the domain could involve x = 4 itself; however, if we tried that x value, then we'd get a division by zero error.
So in reality, the domain is x > 4.
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The range of y = sqrt(x) is the set of positive real numbers. So y > 0 is the range for this equation. Shifting left and right does not affect the range, so the range of y = sqrt(x-4) is also y > 0.
We are dividing a positive number (3) over some positive number in the denominator. Overall, the expression is positive because positive/positive = positive.
Therefore, the range of the given equation is y > 0
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The graph is shown below. We have a vertical asymptote at x = 4 and a horizontal asymptote at y = 0. The green curve is fenced in the upper right corner (northeast corner).