Math Problem Statement

What is the range of the function y = 4x - 7 when the domain is {-2, -1, 3}?

Solution

To find the range of the function y=4x7y = 4x - 7 when the domain is {2,1,3}\{-2, -1, 3\}, we substitute each value of xx into the equation and solve for yy.

Step-by-step solution:

  1. Substitute x=2x = -2: y=4(2)7=87=15y = 4(-2) - 7 = -8 - 7 = -15

  2. Substitute x=1x = -1: y=4(1)7=47=11y = 4(-1) - 7 = -4 - 7 = -11

  3. Substitute x=3x = 3: y=4(3)7=127=5y = 4(3) - 7 = 12 - 7 = 5

Final Range:

The range of the function y=4x7y = 4x - 7 is: {15,11,5}\{-15, -11, 5\}


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Related Questions:

  1. What is the domain and range of y=4x7y = 4x - 7 if xx belongs to all real numbers?
  2. How would the range change if the domain were {3,0,2}\{-3, 0, 2\}?
  3. What is the slope of the linear function y=4x7y = 4x - 7?
  4. How do you determine the range of a function given its domain?
  5. Can you graph y=4x7y = 4x - 7 for the domain {2,1,3}\{-2, -1, 3\}?

Tip:

For linear functions, the range is determined by substituting the values of the given domain into the function equation. Always solve step-by-step to avoid mistakes!

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Math Problem Analysis

Mathematical Concepts

Linear Functions
Domain and Range

Formulas

y = mx + b (slope-intercept form)

Theorems

Substitution method for finding the range of a linear function

Suitable Grade Level

Grade 8-10