Which of the following tables represents a quadratic function ? Explain how you know .
1 answer:
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Answer:
None of the equations given is the equation of the function. The correct equation is:
Step-by-step explanation:
First we must find the slope of the line that passes through these points.
The slope between two points and
is given by:
where is the slope
In this case since we have the points: and
and the slope will be:
and now we have the slope we use the slope-point equation:
Answer:
625 unit²
Step-by-step explanation:
Surface area of a rectangular pyramid :
Area of base * 4(area of triangular side)
Area of base = length * width
Area of base = 15 * 15 = 225
Height of triangular side = 15
Area of triangle = 1/2 * base * height
Area of triangle = 1/2 *15 * 15 = 112.5 unit²
Surface area = 225 + 4(112.5)
Surface Area = 225 + 450
Surface Area = 625 unit²
