Mathematics
Grade10
Easy

Question

Describe the transformation of the function f left parenthesis x right parenthesis equals 1 half x plus 1 that makes the slope 1 and the y - intercept 2.

  1. Vertical translation
  2. Horizontal translation
  3. Vertical stretch
  4. Horizontal compression

hintHint:

We will first find the function for which slope will be 1 and y intercept is 2 after that we will try to find the relation between the new function and f(x).

The correct answer is: Vertical stretch


    Given function f left parenthesis x right parenthesis equals 1 half x plus 1
    And the function that makes the slope 1 and the y - intercept 2 is
    table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell g left parenthesis x right parenthesis equals m x plus b equals 1 cross times x plus 2 space space space space space space space space space space space space space space end cell row cell g left parenthesis x right parenthesis equals x plus 2 equals 2 open parentheses 1 half x plus 1 close parentheses equals 2 f left parenthesis x right parenthesis end cell row cell g left parenthesis x right parenthesis equals k f left parenthesis x right parenthesis comma text  where  end text k equals 2 greater than 1 space space space space space space end cell end table
    So, the transformation of the function is vertically stretched.

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