input: Write a function to calculate the distance between two points on a two-dimensional plane. The function should take four arguments: x1, y1 (coordinates of Point1) and x2, y2 (coordinates of Point2). The function should return the distance as a float. The formula to calculate the distance is sqrt((x2 - x1)^2 + (y2 - y1)^2).
  assert calculate_distance(3, 4, -9, -2) == 13.0
  assert calculate_distance(0, 0, 3, 4) == 5.0
  assert calculate_distance(-1, -1, 2, 3) == 5.0
  assert calculate_distance(0, 0, 0, 1) == 1.0
  assert calculate_distance(0, 0, 1, 0) == 1.0
output: import math
  
  def calculate_distance(x1, y1, x2, y2):
      return math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)