What are good comparing graphs?
Bar charts are good for comparisons, while line charts work better for trends. Scatter plot charts are good for relationships and distributions, but pie charts should be used only for simple compositions — never for comparisons or distributions.
Which are the different categories of graph?
Popular graph types include line graphs, bar graphs, pie charts, scatter plots and histograms. Graphs are a great way to visualize data and display statistics. For example, a bar graph or chart is used to display numerical data that is independent of one another.
Are overlapping lines parallel?
Yes they are parallel because they don’t intersect at an angle.
Why do we use slope?
The concept of slope is important in economics because it is used to measure the rate at which changes are taking place. Slope shows both steepness and direction. With positive slope the line moves upward when going from left to right. With negative slope the line moves down when going from left to right.
What are the difference between positive and negative slope?
A higher positive slope means a steeper upward tilt to the line, while a smaller positive slope means a flatter upward tilt to the line. A negative slope that is larger in absolute value (that is, more negative) means a steeper downward tilt to the line. Suppose a line has a larger intercept.
How do you do slope in math?
To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.
What is rise over run?
The formula for slope is referred to rise over run, Because the fraction consists of the rise (the change in y, going up or down) divided by the run (the change in x, going from left to the right).
Is it rise over run or run over rise?
The formula for slope is sometimes referred to as “rise over run”, because the fraction onsists of the “rise” (being the change in y, going up or down) divided by the “run” (being the change in x, going from left to the right).
How do I calculate a rise?
Subtract the difference in elevation between two points on a hill to calculate the rise. The elevation could be determined by an altimeter or you could use a topographic map. As an example, you might read 900 feet at the top of a hill and 500 feet at the bottom, so subtract 500 from 900 to get a rise of 400 feet.
How do you know if a rise over run is negative?
A way to remember this is to think about the numbers are on the x-axis. Going to the right of the origin are the positive values, and going to the left of the origin are the negative values. If the slope is positive, then the rise and the run need to either be BOTH positive or BOTH negative.
What does negative slope look like?
A negative slope means that two variables are negatively related; that is, when x increases, y decreases, and when x decreases, y increases. Graphically, a negative slope means that as the line on the line graph moves from left to right, the line falls.
How do you know if a graph is positive or negative?
The positive regions of a function are those intervals where the function is above the x-axis. It is where the y-values are positive (not zero). The negative regions of a function are those intervals where the function is below the x-axis. It is where the y-values are negative (not zero).
What line has a slope of 0?
horizontal line
What happens if your slope is 0?
This relationship always holds: a slope of zero means that the line is horizontal, and a horizontal line means you’ll get a slope of zero. (By the way, all horizontal lines are of the form “y = some number”, and the equation “y = some number” always graphs as a horizontal line.)
Do vertical lines have a slope of zero?
The slope of a line is change in Y / change in X. The slope of a horizontal line = 0, not undefined. The slope of a vertical line = undefined.