Question

Draw a representation of your phone signal using the value of i!
Make sure your depiction:

Has 5 bars that are each 10 pixels wide
Has 15 pixels between each bar
Makes the first bar 10 pixels tall
Increases each bar’s height by 10 pixels, with the tallest bar being 50 pixels
Hints:

Determine a way to have your value of i control the height of your bars by holding only the needed values of 10, 20, 30, 40 and 50.
Start Tracy from the center of the canvas.

Answer 1

To create a visual representation of your phone signal using the value of `i`, we can use a simple programming approach to draw the bars. The height of each bar can be determined by the values of `i`. Let’s walk through the steps to accomplish this.

You can use a programming language that supports graphics, like Python with the `turtle` module, or any other graphics library. I will represent it in a pseudocode-like format that can easily be adapted into the actual code. We'll draw 5 bars, where each bar's height increases in increments of 10 pixels from the first bar.

Here's how the structure will look:

### Pseudocode

```pseudocode
SETUP:
WIDTH = 10 // each bar width
SPACE = 15 // space between each bar
START_HEIGHT = 10 // height of the first bar
MAX_HEIGHT = 50 // height of the tallest bar
BAR_COUNT = 5 // number of bars

// Assuming the value of i is an input variable that determines the maximum height achieved by a bar
i = INPUT_VALUE // This should be between 1 and 5 corresponding to heights

DRAWING:
1. Start from the center of the canvas.
2. Loop through each bar index from 0 to BAR_COUNT - 1:
a. Calculate the current bar height using:
bar_height = START_HEIGHT + (index * 10)
b. If index < i, draw the bar:
Draw a rectangle (width = WIDTH, height = bar_height) with the current bar's position calculated as:
x_position = (index * (WIDTH + SPACE)) - (WIDTH * BAR_COUNT / 2 + SPACE * (BAR_COUNT - 1) / 2)
y_position = CENTER - (bar_height / 2) // Center it vertically
c. If index >= i, do not draw the bar.

3. Display the bars on the canvas.
```

### Example in Python using Turtle Graphics

Here's a simple example using Python's turtle graphics to visualize this:

```python
import turtle

# Function to draw the phone signal bars
def draw_signal_bars(i):
turtle.speed(0) # Set the drawing speed to maximum
turtle.penup()
turtle.goto(-100, 0) # Start drawing from the center
turtle.pendown()

bar_width = 10
space_between_bars = 15
start_height = 10

for index in range(5):
bar_height = start_height + (index * 10)

if index < i:
turtle.begin_fill() # Start filling the bar
turtle.left(90) # Point upwards
turtle.forward(bar_height) # Draw the height
turtle.right(90) # Point right
turtle.forward(bar_width) # Draw the width
turtle.right(90) # Point downwards
turtle.forward(bar_height) # Go back to the base
turtle.left(90) # Point left
turtle.forward(bar_width) # Complete the bar shape
turtle.end_fill() # Fill the color
else:
turtle.penup()

# Move to the starting position of the next bar
turtle.penup()
turtle.right(90) # Point down
turtle.forward(bar_height) # Drop down to the baseline
turtle.left(90) # Point right
turtle.forward(bar_width + space_between_bars) # Move to next bar position
turtle.pendown()

turtle.done()

# Input value i (1-5)
i = 3 # Example value, you can change it
draw_signal_bars(i)
```

### Explanation:

- Start by determining the height based on the index of each bar.
- Use a loop to draw each bar, based on whether the index is less than the provided value `i`.
- Bars are drawn with increasing heights, centered in the canvas.
- Adjust the `i` variable to test how many bars show.

Feel free to adapt this code to the programming language you are using!