Isobar for atmospheric pressure, isotherm for temperature, or contour for height above (below) sea level.
City maps, the squares or grids represent one square mile. On larger maps they can indicate townships, counties, or land parcels.
The equation x=c where c is a constant is the equation of a vertical line. It can't be a function but it is linear so the answer is no. For example, the vertical line produced by the linear equation x = 3 does not represent a function. We cannot write this equation so that y is a function of x because the only x-value is 3 and this "maps" to every real-number y.
A flow line for a map on a vector field is a path such that .
To determine if a relation is a function, check whether each input (or x-value) corresponds to exactly one output (or y-value). This can be done by examining ordered pairs or a graph: if any x-value maps to multiple y-values, the relation is not a function. In a graph, if a vertical line intersects the curve more than once, the relation fails the vertical line test and is not a function.
A line on a map that connects points of the same height is called a contour line. These lines are used in topographic maps to represent elevation and terrain features, helping to visualize the landscape's shape and steepness. Contour lines that are close together indicate steep slopes, while those that are farther apart suggest gentler slopes.
the blue line represents Lakes, Streams , canal and mainly just water
Contour lines do not always need to be joined. While in topographic maps they are typically continuous and closed loops to represent elevation, in some cases they may be broken or interrupted to indicate a depression or a cliff. However, for clarity and to accurately represent the topography, contour lines are usually connected and form a continuous line.
Land
represent the key...
City maps, the squares or grids represent one square mile. On larger maps they can indicate townships, counties, or land parcels.
Thick black lines on maps typically represent major roads, highways, or railways. They are used to denote routes that are important for transportation and travel.
The equation x=c where c is a constant is the equation of a vertical line. It can't be a function but it is linear so the answer is no. For example, the vertical line produced by the linear equation x = 3 does not represent a function. We cannot write this equation so that y is a function of x because the only x-value is 3 and this "maps" to every real-number y.
equator
stars with circles around them represent capitals.
Globes and maps
a location drawn to scale
Flat maps that represent a portion of the round earth are called "world maps". These maps use projections to show the Earth's curved surface on a flat surface, with distortions in size, shape, distance, or direction. Popular world maps include the Mercator projection, the Peters projection, and the Winkel Tripel projection.