Ask Question
19 August, 12:44

X 1 2 3 4 5 Y 1 3 5 7 9

Given the table, write an expression for the function, and describe what it does.

A) y = 2x. Y is double x.

B) y = 3x. Y is triple x.

C) y = 2x + 1. Y is twice x plus 1.

D) y = 2x - 1. Y is twice x minus 1.

+2
Answers (1)
  1. 19 August, 13:20
    0
    Option D:

    y = 2x - 1; y is twice x minus 1.

    Solution:

    Option A: y = 2x; y is double x

    substitute x values in y = 2x, we get

    For x = 1, y = 2 (1) = 2

    so, y = 2x is false.

    Option B: y = 3x; y is triple x

    substitute x values in y = 3x, we get

    For x = 1, y = 3 (1) = 3

    so, y = 3x is false.

    Option C: y = 2x + 1; y is twice x plus 1.

    substitute x values in y = 2x + 1, we get

    For x = 1, y = 2 (1) + 1 = 3

    so, y = 2x + 1 is false.

    Option D: y = 2x - 1; y is twice x minus 1.

    substitute x values in y = 3x, we get

    For x = 1, y = 2 (1) - 1 = 1

    For x = 2, y = 2 (2) - 1 = 3

    For x = 3, y = 2 (3) - 1 = 5

    For x = 4, y = 2 (4) - 1 = 7

    For x = 5, y = 2 (5) - 1 = 9

    so, y = 2x - 1 is true.

    Hence the expression for the table is y = 2x - 1; y is twice x minus 1.

    Each value of y is double that of corresponding value of x, minus 1.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “X 1 2 3 4 5 Y 1 3 5 7 9 Given the table, write an expression for the function, and describe what it does. A) y = 2x. Y is double x. B) y = ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers