Use technology to find points and then graph the function y, equals, 2, start superscript, x, minus, 4, end superscript, minus, 1, commay=2

x−4
−1, following the instructions below.
Equation of asymptote:
y, equalsy=

Plot at least four points with integer coordinates that fit on the axes below

1 answer

To analyze the function \( y = 2^{(x - 4)} - 1 \) and find the points to plot, we can first identify the characteristics of this function and its asymptote.

Step 1: Asymptote

The function \( y = 2^{(x - 4)} - 1 \) approaches the line \( y = -1 \) as \( x \) approaches negative infinity. Therefore, the equation of the asymptote is: \[ y = -1 \]

Step 2: Finding Points

To plot the function, we can calculate the \( y \) values for various integer \( x \) values. We'll choose a range of \( x \) values to see how the function behaves.

Let's evaluate the function at \( x = 0, 1, 2, 3, 4, 5, 6, 7 \):

  • For \( x = 0 \): \[ y = 2^{(0 - 4)} - 1 = 2^{-4} - 1 = \frac{1}{16} - 1 = \frac{1 - 16}{16} = -\frac{15}{16} \approx -0.9375 \]

  • For \( x = 1 \): \[ y = 2^{(1 - 4)} - 1 = 2^{-3} - 1 = \frac{1}{8} - 1 = \frac{1 - 8}{8} = -\frac{7}{8} = -0.875 \]

  • For \( x = 2 \): \[ y = 2^{(2 - 4)} - 1 = 2^{-2} - 1 = \frac{1}{4} - 1 = \frac{1 - 4}{4} = -\frac{3}{4} = -0.75 \]

  • For \( x = 3 \): \[ y = 2^{(3 - 4)} - 1 = 2^{-1} - 1 = \frac{1}{2} - 1 = \frac{1 - 2}{2} = -\frac{1}{2} = -0.5 \]

  • For \( x = 4 \): \[ y = 2^{(4 - 4)} - 1 = 2^{0} - 1 = 1 - 1 = 0 \]

  • For \( x = 5 \): \[ y = 2^{(5 - 4)} - 1 = 2^{1} - 1 = 2 - 1 = 1 \]

  • For \( x = 6 \): \[ y = 2^{(6 - 4)} - 1 = 2^{2} - 1 = 4 - 1 = 3 \]

  • For \( x = 7 \): \[ y = 2^{(7 - 4)} - 1 = 2^{3} - 1 = 8 - 1 = 7 \]

Step 3: Integer Points

Let's focus on the integer coordinate points we found:

  • \( (4, 0) \)
  • \( (5, 1) \)
  • \( (6, 3) \)
  • \( (7, 7) \)

Results

Here are the integer coordinates we can plot:

  1. \( (4, 0) \)
  2. \( (5, 1) \)
  3. \( (6, 3) \)
  4. \( (7, 7) \)

Graphing the Function

On a coordinate plane, we can mark these points. The asymptote \( y = -1 \) will also be represented as a dashed horizontal line across the graph at \( y = -1 \).

Here's a simple representation of the function:

  • The curve rises steeply after \( x = 4 \).
  • It approaches the asymptote (horizontal line at \( y = -1 \)) for smaller values of \( x \).

Final Summary

  • Equation of Asymptote: \( y = -1 \)
  • Integer Points to Plot:
    • \( (4, 0) \)
    • \( (5, 1) \)
    • \( (6, 3) \)
    • \( (7, 7) \)

You can plot these points and sketch the curve for a complete view of the function behavior!