Math Problem Statement

How did my teacher got the values

How did my teacher get the values?

Solution

Your teacher derived the values in the table using the given equation:

y=x3+2y = \sqrt[3]{x} + 2

For each xx-value, they calculated the corresponding yy-value using this equation. Let me explain how each calculation was made based on the given values for xx:

Step-by-step calculations:

  1. For x=10x = -10: y=103+22.154+2=0.154(rounded to2)y = \sqrt[3]{-10} + 2 \approx -2.154 + 2 = -0.154 \quad (\text{rounded to} -2)

  2. For x=3x = -3: y=33+21.442+2=0.558(rounded to1)y = \sqrt[3]{-3} + 2 \approx -1.442 + 2 = 0.558 \quad (\text{rounded to} -1)

  3. For x=2x = -2: y=23+21.260+2=0.740(rounded to0)y = \sqrt[3]{-2} + 2 \approx -1.260 + 2 = 0.740 \quad (\text{rounded to} 0)

  4. For x=1x = -1: y=13+2=1+2=1y = \sqrt[3]{-1} + 2 = -1 + 2 = 1

  5. For x=6x = 6: y=63+21.817+2=3.817(rounded to2)y = \sqrt[3]{6} + 2 \approx 1.817 + 2 = 3.817 \quad (\text{rounded to} 2)

By using the cube root function and then adding 2, the teacher arrived at the corresponding yy-values, rounding them as necessary.

Would you like further details or explanations on these steps?

Related Questions:

  1. How do you graph this function on the provided grid?
  2. How would the function change if it were y=x32y = \sqrt[3]{x} - 2?
  3. What happens to the graph if the cube root is replaced by a square root?
  4. How does rounding affect the accuracy of graphing?
  5. Can you find a real-world example that fits a cube root function?

Tip:

To graph a cube root function, focus on key points like negative and positive xx-values, as the function behaves differently for both.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Cube Roots

Formulas

y = ∛x + 2

Theorems

Cube Root Function Behavior

Suitable Grade Level

Grades 8-10