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If y=9((1)/(3))^(x)-4 is graphed in the xy-plane, which of the following characteristics of the graph is displayed as a constant or coefficient in the equation?
Choose 1 answer:
(A) y-intercept
(B) x-intercept
(C) Slope
(D) The value y approaches as x increases

If y=9(13)x4 y=9\left(\frac{1}{3}\right)^{x}-4 is graphed in the xy x y -plane, which of the following characteristics of the graph is displayed as a constant or coefficient in the equation?\newlineChoose 11 answer:\newline(A) y y -intercept\newline(B) x x -intercept\newline(C) Slope\newline(D) The value y y approaches as x x increases

Full solution

Q. If y=9(13)x4 y=9\left(\frac{1}{3}\right)^{x}-4 is graphed in the xy x y -plane, which of the following characteristics of the graph is displayed as a constant or coefficient in the equation?\newlineChoose 11 answer:\newline(A) y y -intercept\newline(B) x x -intercept\newline(C) Slope\newline(D) The value y y approaches as x x increases
  1. Identify Constants and Coefficients: Analyze the given equation y=9(13)x4y=9\left(\frac{1}{3}\right)^{x}-4 to identify constants and coefficients.\newlineThe equation is in the form y=ABxCy=A\cdot B^{x} - C, where AA is a coefficient, BB is the base of the exponential function, and CC is a constant.
  2. Find Y-Intercept: Identify the y-intercept from the equation.\newlineThe y-intercept occurs when x=0x=0. Plugging x=0x=0 into the equation, we get y=9(13)04y=9\left(\frac{1}{3}\right)^{0}-4, which simplifies to y=9(1)4y=9(1)-4, and then to y=5y=5. The y-intercept is the constant term in the equation that remains after the exponential part equals 11 (when x=0x=0).
  3. Determine Constant Term Meaning: Determine which characteristic the constant term represents.\newlineThe constant term 4-4 in the equation y=9(13)x4y=9\left(\frac{1}{3}\right)^{x}-4 represents the vertical shift of the graph, which is the value yy approaches as xx increases. This is because as xx becomes very large, the term 9(13)x9\left(\frac{1}{3}\right)^{x} approaches zero, and the graph approaches y=4y=-4.
  4. Match with Options: Match the characteristic with the given options.\newlineThe constant term 4-4 corresponds to the value yy approaches as xx increases, which is one of the given options.

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