When a line on a graph is going up, what does that mean?

When a line is going up, it means it has a positive correlation

The answer can change depending on the context of the graph (ie: the labels on the x-axis and y-axis). Generally, when a line on the graph is going upwards, it is said to have a positive gradient.

This means that on any point of the line, it should be the case that the y-coordinate divided by the x-coordinate will give a positive answer. As an inequality it would be "(y/x) > 0".

If this is a straight line graph, it means that it has a positive gradient. Another way of saying that is that whenever you make x bigger, y has to get bigger too.

If we're talking about scatter graphs, and this is a line of best fit, it means there is a positive correlation between the variables, so if one is high the other is likely to be high too, and when the first is low the second is likely to be low too.

This would show a positive correlation as one value increases so does the other.

It has a positive gradient

By a line going up on a graph, if your referring to correlations, then a line in the diagonal upwards direction would mean a positive correlation.

The gradient of the straight line is positive and on an upward trend. There are also x increasing values (independent variable) with increasing y values (dependent variable).

It means it has a positive gradient

two variables in the graph are positively related

This reflects a positive gradient, for example on a distance -time graph this would mean increasing velocity, or on a velocity -time graph, increasing acceleration.

It means that the factors identified on X-axis and Y-axis both are on rising side. For example in Expectations for Dividend every one starts purchasing share of a company that has announced dividend. In this case the graph line of share price goes upwards till the time dividend is paid out. After the payment point the share price starts declining and it is the point that it is Ex- Dividend.

If the line is going up that's mean it's slope (gradient) is positive and the function is increasing in this interval.

A graph just shows the values of a function depending on what x value you put into it. If the graph is going up, then this means that as you increase the value of x that you put into the function, the value of the function also always increases :)

That means it is sloping upwards assuming you are moving from left to right on the graph and the line is going up. Slope of a line is defined as it's rise over run. Rise being change in y-coordinates and run being change in x-coordinates.

Positive gradient or positive correlation