Grade 11 Functions Exam Prep Test: Graphing Transformed Parent Functions
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Questions and Answers

What are the transformations applied to the function $f(x) = \rac{1}{
qrt{x}}$ to obtain the new function $g(x) = 3f(x - 2)$?

Horizontal translation by 2 units to the right and vertical stretching by a factor of 3

What is the domain and range of the function $h(x) = 2x^2 - 5$?

Domain: all real numbers; Range: $y \geq -5$

What is the expanded and simplified form of the expression $(x + 3)(x - 2)$?

$x^2 + x - 6$

What is the simplified form of the rational expression $\frac{2x^2 - x - 6}{x^2 - 4}$ and are there any restrictions on the variable?

<p>$\frac{(2x - 3)(x + 2)}{(x - 2)(x + 2)}$; Restrictions: $x \neq 2, -2$</p> Signup and view all the answers

What are the solutions to the quadratic equation $x^2 - 4x + 3 = 0$ when factored?

<p>$x = 1$ and $x = 3$</p> Signup and view all the answers

What is the inverse function of $y = 2x + 1$?

<p>$f^{-1}(x) = \frac{x - 1}{2}$</p> Signup and view all the answers

Find the time it takes for the ball to hit the ground.

<p>6 seconds</p> Signup and view all the answers

Simplify the expression $2^{3/2} \times 2^{-1/2}$.

<p>$2$</p> Signup and view all the answers

Determine the population after 10 years, given the exponential function $P(t) = 5000 \times 1.02^t$.

<p>6103.02</p> Signup and view all the answers

Solve the equation $\sin(x) = \frac{\sqrt{3}}{2}$ for $0 \leq x \leq 2\pi$.

<p>$\frac{\pi}{3}, \frac{2\pi}{3}$</p> Signup and view all the answers

Determine the length of side AC in triangle ABC, given that angle A measures $45^\ ext{o}$ and side BC is 8 units long.

<p>$8\sqrt{2}$</p> Signup and view all the answers

Determine the length of the ladder, given the angle of elevation is $60^\ ext{o}$ and the distance from the base of the ladder to the wall is 10 meters.

<p>20 meters</p> Signup and view all the answers

Apply the given transformations to the function $f(x) = \sin(x)$ and sketch the new graph.

<p>Not provided</p> Signup and view all the answers

Sketch the graph of $y = 2 \sin(x + \frac{\pi}{4})$, indicating the amplitude, period, phase shift, and vertical shift.

<p>Not provided</p> Signup and view all the answers

Determine the maximum and minimum temperatures, given the function $T(t) = 20 + 10 \sin(\frac{\pi}{6}t)$.

<p>Maximum: 30 degrees, Minimum: 10 degrees</p> Signup and view all the answers

Prove the identity $\tan(x) \cdot \cot(x) = 1$.

<p>Not provided</p> Signup and view all the answers

What are the domain and range of the function $h(x) = 2x^2 - 5$?

<p>Domain: All real numbers; Range: $y ext{ such that } y geq -5$</p> Signup and view all the answers

What is the result of expanding and simplifying the expression $(x + 3)(x - 2)$?

<p>$x^2 + x - 6$</p> Signup and view all the answers

Simplify the rational expression $\frac{2x^2 - x - 6}{x^2 - 4}$ and state any restrictions on the variable.

<p>$\frac{2x + 3}{x + 2}$; $x \neq -2$</p> Signup and view all the answers

What is the inverse function of $y = 2x + 1$?

<p>$x = \frac{y - 1}{2}$</p> Signup and view all the answers

What is the solution to the quadratic equation $x^2 - 4x + 3 = 0$ when factored?

<p>$x = 1, 3$</p> Signup and view all the answers

What are the transformations applied to the function $f(x) = \sqrt{x}$ to obtain the new function $g(x) = 3f(x)$?

<p>Vertical stretch by a factor of 3</p> Signup and view all the answers

What is the time it takes for the ball to hit the ground?

<p>6 seconds</p> Signup and view all the answers

Simplify the expression $2^{3/2} imes 2^{-1/2}$.

<p>2</p> Signup and view all the answers

What is the population after 10 years, given the exponential function $P(t) = 5000 imes 1.02^t$?

<p>6103.02</p> Signup and view all the answers

What are the solutions to the equation $ ext{sin}(x) = rac{ ext{sqrt}{3}}{2}$ for $0 eq x eq 2 ext{pi}$?

<p>$rac{ ext{pi}}{3}, rac{5 ext{pi}}{3}$</p> Signup and view all the answers

What is the length of side AC in triangle ABC, given that angle A measures $45^ ext{o}$ and side BC is 8 units long?

<p>8</p> Signup and view all the answers

What is the length of the ladder, given the angle of elevation is $60^ ext{o}$ and the distance from the base of the ladder to the wall is 10 meters?

<p>20 meters</p> Signup and view all the answers

What is the maximum and minimum temperatures, given the function $T(t) = 20 + 10 ext{sin}(rac{ ext{pi}}{6}t)$?

<p>30, 10</p> Signup and view all the answers

Prove the identity $ ext{tan}(x) imes ext{cot}(x) = 1$.

<p>It is an identity and holds true for all x where tan(x) and cot(x) are defined.</p> Signup and view all the answers

Find the sum of the first 10 terms of the arithmetic sequence $2, 6, 10, ...$

<p>260</p> Signup and view all the answers

Determine the amount of money in the account after 3 years, if you invest $5000 in an account that earns 4% interest annually.

<p>$5624.32</p> Signup and view all the answers

Study Notes

Function Transformations

  • Horizontal shift: $f(x) = \frac{1}{\sqrt{x}}$ to $g(x) = 3f(x - 2)$ involves a horizontal shift of 2 units to the right and a vertical stretch by a factor of 3

Quadratic Functions

  • Domain and range of $h(x) = 2x^2 - 5$ are $(-\infty, \infty)$ and $[-5, \infty)$, respectively
  • Solutions to the quadratic equation $x^2 - 4x + 3 = 0$ when factored are $x = 1$ and $x = 3$

Rational Expressions

  • Simplified form of the rational expression $\frac{2x^2 - x - 6}{x^2 - 4}$ is $\frac{2x + 3}{x + 2}$
  • Restrictions on the variable: $x \neq -2$ and $x \neq 2$

Trigonometry

  • Inverse function of $y = 2x + 1$ is $y = \frac{x - 1}{2}$
  • Solution to the equation $\sin(x) = \frac{\sqrt{3}}{2}$ for $0 \leq x \leq 2\pi$ is $x = \frac{\pi}{3}$ and $x = \frac{2\pi}{3}$
  • Identity: $\tan(x) \cdot \cot(x) = 1$

Exponential Functions

  • Population after 10 years, given the exponential function $P(t) = 5000 \times 1.02^t$, is $P(10) = 5000 \times 1.02^{10} \approx 6815.51$

Geometry

  • Length of side AC in triangle ABC, given that angle A measures $45^{\circ}$ and side BC is 8 units long, is $AC = BC \times \sin(A) = 8 \times \sin(45^{\circ}) = 4\sqrt{2}$ units
  • Length of the ladder, given the angle of elevation is $60^{\circ}$ and the distance from the base of the ladder to the wall is 10 meters, is $l = \frac{10}{\cos(60^{\circ})} = 20$ meters

Arithmetic Sequences

  • Sum of the first 10 terms of the arithmetic sequence $2, 6, 10, ...$ is $S_{10} = \frac{10}{2}(2 + 46) = 240$

Compound Interest

  • Amount of money in the account after 3 years, if you invest $5000 in an account that earns 4% interest annually, is $A = 5000 \times (1 + 0.04)^3 \approx 6253.81$

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Description

This quiz covers graphing transformed parent functions, including applying various transformations to the function and sketching the resulting graphs. Sample questions include modifying the function f(x) = √(x) according to specific transformations.

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