Analyzing Intercepts under Function Shifts

00:00 7 marks

  • Build Confidence
  • SL & HL
  • Tier 2
  • Graph transformations
  • Intercepts
  • Function shifts

Consider the function \(f(x)=x^2\). Solve the following:

(a) Apply a shift to \(f(x)\) that moves the graph 3 units to the right and 2 units up to obtain the new function \(g(x)\).

(b) Find the x-intercepts and y-intercept of the function \(g(x)\).

Part a

3 minutes 3 marks

Question

Apply a shift to the function \(f(x)=x^2\) that moves it 3 units to the right and 2 units up. Write the equation of the new function \(g(x)\).



Hint Hint

Hint

Recall that a right shift by h units and upward shift by k units gives \(g(x)=f(x-h)+k\).

  • Answer Answer

Complete Answer

g(x) = (x-3)^2 + 2

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  • Answer Explanation Answer Explanation

Part b

4 minutes 4 marks

Question

Find the x-intercepts and y-intercept of the function \(g(x)=(x-3)^2+2\).



Hint Hint

Hint

For x-intercepts, set \(g(x)=0\) and solve; for the y-intercept, evaluate \(g(0)\).

  • Answer Answer

Complete Answer

x-intercepts: No real intercepts; y-intercept: \(g(0)=11\)

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