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The function y = 3 squared - x - 3 is graphed only over the domain of x . What is the range of the graph?

User Leox
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Answer: Y < = 144

Explanation:

Given that the function y = 3 squared - x - 3 is graphed only over the domain of –8 < x < 8

That is, y = 3x^2 - 3

Since x is greater than -8, the minimum value of x will be -7.

Also, x is less than 8, the maximum value of x will be 7

Substitute the two values into the given function.

When x = -7

Y = 3(-7)^2 - 3

Y = 3(49) - 3

Y = 147 - 3

Y = 144

When x = 7

Y = 3(7)^2 - 3

Y = 3(49) - 3

Y = 147 - 3

Y = 144

The range of the graph is therefore, Y less than or equal to 144. That is,

Y < = 144

User Cutis
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