To find the x-coordinate of a point on a graph:
- Draw a straight line from the point directly to the x-axis.
- The number where the line hits the x-axis is the value of the x-coordinate.
What is the point on the graph?
A point-to-point graph, also called a line graph, is a pictorial rendition of data in which specific values of a function are plotted as dots on a coordinate plane. Adjacent pairs of dots are connected by straight lines.
What is an XY graph?
A Scatter (XY) Plot has points that show the relationship between two sets of data. In this example, each dot shows one person's weight versus their height. (The data is plotted on the graph as "Cartesian (x,y) Coordinates")
- Identify what the graph represents.
- Check the scale for each graph element.
- Locate the graph element you want information on.
- Read directly up from "August" until you find a dot or a slanting line, on a line graph, or the top of a bar for a bar graph.
Algebra 1 – How to Graph a Linear Equation Using Slope and y
- Step 1: Put the equation in Slope Intercept Form.
- Step 2: Graph the y-intercept point (the number in the b position) on the y-axis.
- Step 3: From the point plotted on the y-axis, use the slope to find your second point.
- Step 4: Draw your line using the two points you plotted (y-intercept (b) first, slope (m) second.
Scientists like to say that the “independent” variable goes on the x-axis (the bottom, horizontal one) and the “dependent” variable goes on the y-axis (the left side, vertical one).
Remember that the slope of a line never changes, so you can choose whatever 2 points you want and you will always get the same slope. Calculate the rise and run (You can draw it on the graph if it helps). The slope is 2/4, which , of course, you can simplify to ½.
Line graphs can also be used to compare changes over the same period of time for more than one group. Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time. Bar graphs are used to compare things between different groups or to track changes over time.
When presented with your graph, other people should be able to figure out what is plotted without asking you. Titles of graphs are usually "Y versus X"; so in this case, our title is "Position versus Time." (NOT position divided by time, or position minus time.) Labels on the axes must have units!
When you rotate the image using the 90 degrees rule, the end points of the image will be (-1, 1) and (-3, 3). The rules for the other common degree rotations are: For 180 degrees, the rule is (x, y) --------> (-x, -y) For 270 degrees, the rule is (x, y) --------> (y, -x)
Chances are, we've been graphing points for a long time. This is called a Cartesian coordinate graph. It's made up of two axes ("axes" is just the plural of "axis"): The horizontal axis is called the x-axis. And the vertical one is the y-axis.
In two dimensions. On the flat coordinate plane, there are two axes, the vertical y-axis and the horizontal x-axis. The origin is the point where they intersect. This point has the coordinates 0,0 and is usually labelled with the letter O.
When an ordered pair is used to locate a point on a grid, the two numbers are called the 'coordinates' of the point. The 'x' coordinate is the horizontal distance from the origin to the plotted point.
Negative Slope. If a line has a positive slope (i.e. m > 0), then y always increases when x increases and y always decreases when x decreases. Thus, the graph of the line starts at the bottom left and goes towards the top right.
The center of the coordinate system (where the lines intersect) is called the origin. The axes intersect when both x and y are zero. The coordinates of the origin are (0, 0). An ordered pair contains the coordinates of one point in the coordinate system.
To do this, select STAT EDIT . You should see headings L1, L2, and L3. List the input values from your data points under L1, and the output values under L2. To display the data points that you just typed in, you need to tell the calculator that you want to plot your data points instead of a standard function y = f(x).
To insert a chart:
- Select the cells you want to chart, including the column titles and row labels. These cells will be the source data for the chart.
- From the Insert tab, click the desired Chart command.
- Choose the desired chart type from the drop-down menu.
- The selected chart will be inserted in the worksheet.
How to Draw a Graph
- Draw the x axis. Make a horizontal line on the paper.
- Draw the y axis. Make a vertical line that passes through the origin of the x axis.
- Calculate the values of y for several values of x.
- Mark the ordered pairs on the graph.
- You have created a graph of the function f(x) = 2x.
Creating an xy scattergraph in Microsoft Excel
- Select the data and click on the chart wizard button:
- Choose an x-y scatter graph:
- Choose finish:
- Click on a point on the chart to highlight the data points:
- Choose Chart: Add Trendline.
- Choose a linear regression and then click on the Options tab.
Part 1 Creating a Line Graph
- Open Microsoft Excel. Double-click the Excel program icon, which resembles a white "X" on a green folder.
- Click Blank Workbook. It's on the Excel home page.
- Enter your data.
- Select your data.
- Click the Insert tab.
- Click the "Line Graph" icon.
- Select a graph style.
- Click a graph style.
How to Create a Line Graph
- Create a table. Draw the x- and y-axes on the page.
- Label each axis. If time is one of the factors, it should go along the horizontal (x) axis.
- Add data. Data for a line graph is usually contained in a two-column table corresponding to the x- and y-axes.
- Create a key.
It is similar to a scatter plot except that the measurement points are ordered (typically by their x-axis value) and joined with straight line segments. A line chart is often used to visualize a trend in data over intervals of time – a time series – thus the line is often drawn chronologically.