A line on a graph that compares two variables, temperature for example tells us a great deal about the relationship of these variables in the experimental system. When the line is straight it reflects a direct and proportional relationship between the two factors.
If your data doesn't graph into a straight line, it may suggest a nonlinear relationship between the variables. In such cases, you can try fitting a curve or using a different type of regression analysis, such as polynomial regression or exponential regression, to better capture the underlying relationship in your data. It's important to choose the appropriate model that best fits your data and the underlying theory.
Ejnar Hertzsprung and Henry Norris Russell,working independently, realized the relationship between a star's temperature and its brightness.Together, in 1910, they formed what is now known as the Hertzsprung--Russell diagram or HR Diagram.It's a scatter graph showing the relationship between a star's absolute magnitudes, their spectral types and temperatures.
I believe that this would probably be a line graph, or a double line graph-whichever you choose to call it. It could also be a double bar graph though too.
Look at the equation for kinetic energy.It is clear that relation between mass and kinetic energy is linear (you would get a straight line on the graph), while the relation between speed and kinetic energy is quadratic (you would get a curve, specifically a parabola).
The relationship in Charles's law is a direct relationship between the volume and temperature of a gas at constant pressure. As temperature increases, the volume of the gas also increases, and vice versa. This relationship is shown as a straight line when graphed.
Linear = Straight line! So, a graph of a linear relationship is a straight line.
_linear_
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it is a positive relationship
The graph is a straight line.
Straight line.
A linear relationship will show up on a graph as a straight line.
By definition, if you graph the relationship between two variables and the result is a straight line (of whatever slope) that is a linear relationship. If it is a curve, rather than a straight line, then it is not linear.
dd
linear
A straight line which is not vertical.
a straight line[apex]