On a standard Cartesian graph, there are two axes. The Y axis runs vertically, bottom to top and the X axis runs horizontally from left to right.
downward as they proceed from left to right across a graph
The slope of the line (on a linear equation) is rise over run. Meaning how far apart vertically (up and down) two points on the graph are, divided by how many units apart they are horizontally (left to right).
If a line on a graph is rising as it goes from left to right, it has a positive slope. If it is falling from left to right (or rising from right to left) it has a negative slope. If it is horizontal, it has a slope of zero.
True
??? how do you expect me to answer that?? ???
The X axis.
It is OFTEN the x axis, but not always. Sometimes it is the t-axis (for time). In basic economics it could be quantity (q), in demographics it could be age (y, for years). There are many alternatives.
X Axis
A horizontal line is a line that goes across (left to right or right to left).
Written on a line across the page but centered on the page
Yes because you need the data on the right and across the bottom to make the graph
downward as they proceed from left to right across a graph
Generally the x-axis is displayed on a 2-dimensional Cartesian Coordinate system running horizontally (left to right - for negative to positive values of x) In a 3-D graph, the x-axis is usually shown running diagonally from upper right to lower left (for negative to positive values of x) . In a 3-D graph, the y-axis is the one running horizontally and the z-axis is vertical.
There are many graphs which while you can usually use most of them no matter what experiment you are doing that is not always true, nor is it the right use of a graph. some of the most likely graphs you will probably come across , or for that matter need to use are bar graphs, line graphs, pie graphs, and picture graphs.
Planets appear to move horizontally when they are in that part of the ecliptic that lies horizontally across the southern horizon at midnight (seen from the northern hemisphere). That occurs when a planet is at a right-ascension of 18 hours (in Sagittarius), and a couple of hours either side. A snapshot of the planet taken every night at midnight shows it moving horizontally (approximately) from right to left. All planets do this.
left to right --------------------------------
g(x) = √(x - 16) The graph of g(x) = √(x - 16) has the same shape as the graph of f(x) = √x. However, it is shifted horizontally to the right 16 units. The graph of the function f(x)=square root(x) is made up of half a parabola (in the first quadrant) with directrix (16, 0), which opens rightward. The domain is [16,∞) and range [0, ∞).