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MATH 1112 Final: Trig final study guide

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22 Sep 2017

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Tricia Ann Rushton

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Testing solutions to an equation (given an x and y) using substitution. You will be given an ordered pair and an equation. After solving, the same number should be on both sides. For example, given the equation y=x^2, see if the point (3,9) is a solution. Insert 9 and 3 into the equation respectively. Given an equation, graph using x and y intercepts. First, find y intercept by plugging 0 in for x. This is where the function crosses the vertical y axis. Next, find the x intercept by plugging 0 in for y. Use a graphing calculator or plug random values into x to get y values. Plot the points and draw a line through them. *for this practice problem, 4 and -4 are good x values to use because they eliminate the. Insert given values into the equation to solve for the missing value. Given the equation 4x+5y=20, complete the ordered pairs below (0, ) ( , 0)

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Related Questions

Algebra

Please note that some questions have multiple parts.

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Algebra

The function f(x) = 4x/9x-7 is one-to-one. Find its inverse and check your answer. f -1 (x) = (Simplify your answer.) Graph the function. Based on the graph, state the domain and the range and find any intercepts. The domain is . (Type your answer in interval notation.) The range is . (Type your answer in interval notation.) Find the intercepts, if there are any. Select the correct choice below and fill in any answer boxes within your choice. The intercept(s) is'are . (Type an ordered pair. Use a comma to separate answers as needed. Type an exact answer.) Solve the equation. What is the solution? x = (Use a comma to separate answers.) If f(x) = 5x2 + 3 and g(x) = 9x + a, find a so that the graph of f g crosses the y-axis at 8. What is the value of a? a = (Use reduced fractions or integers. Use commas to separate values.) The function f(x) = 7/4+x is one-to-one. Find its inverse and check your answer. f -1 (x) = (Simplify your answer.) Suppose that H(x) = (1/4)x - 4096 What is H( - 5)? What is the point that corresponds to this vahie on the graph of H? If H(x) = - 4032, what is x? What is the point that corresponds to this vahie on the graph of H? Find the zero of H. H( - 5) = (Type an integer or a simplified fraction.) The point that corresponds to this vahie on the graph of H is . (Type an ordered pair, but do not use commas in any individual coordinates.) If H(x) = - 4032, then x = . (Type an integer or a simplified fraction.) The point that corresponds to this vahie on the graph of H is . (Type an ordered pair, but do not use commas in any individual coordinates.) The zero of H is x = (Type an integer or a simplified fraction.) If f(x) = x3 - 3x2 + 2x - 9 and g(x) = 4: find (f g)(x) and (g f)(x). What is (f g)(x)? What is (f g)(x)? (f g)(x) = What is (g f)(x)? (g f)(x) = The function f(x) = 8x/x+5 is one-to-one. Find its inverse and check your answer. f -1 (x) = (Simplify your answer.) Solve the equation. ex= e9x + 72 x = (Use a comma to separate answers as needed.)

Show transcribed image text The function f(x) = 4x/9x-7 is one-to-one. Find its inverse and check your answer. f -1 (x) = (Simplify your answer.) Graph the function. Based on the graph, state the domain and the range and find any intercepts. The domain is . (Type your answer in interval notation.) The range is . (Type your answer in interval notation.) Find the intercepts, if there are any. Select the correct choice below and fill in any answer boxes within your choice. The intercept(s) is'are . (Type an ordered pair. Use a comma to separate answers as needed. Type an exact answer.) Solve the equation. What is the solution? x = (Use a comma to separate answers.) If f(x) = 5x2 + 3 and g(x) = 9x + a, find a so that the graph of f g crosses the y-axis at 8. What is the value of a? a = (Use reduced fractions or integers. Use commas to separate values.) The function f(x) = 7/4+x is one-to-one. Find its inverse and check your answer. f -1 (x) = (Simplify your answer.) Suppose that H(x) = (1/4)x - 4096 What is H( - 5)? What is the point that corresponds to this vahie on the graph of H? If H(x) = - 4032, what is x? What is the point that corresponds to this vahie on the graph of H? Find the zero of H. H( - 5) = (Type an integer or a simplified fraction.) The point that corresponds to this vahie on the graph of H is . (Type an ordered pair, but do not use commas in any individual coordinates.) If H(x) = - 4032, then x = . (Type an integer or a simplified fraction.) The point that corresponds to this vahie on the graph of H is . (Type an ordered pair, but do not use commas in any individual coordinates.) The zero of H is x = (Type an integer or a simplified fraction.) If f(x) = x3 - 3x2 + 2x - 9 and g(x) = 4: find (f g)(x) and (g f)(x). What is (f g)(x)? What is (f g)(x)? (f g)(x) = What is (g f)(x)? (g f)(x) = The function f(x) = 8x/x+5 is one-to-one. Find its inverse and check your answer. f -1 (x) = (Simplify your answer.) Solve the equation. ex= e9x + 72 x = (Use a comma to separate answers as needed.)

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