when is the slope of a graph true? when is the slope of a line when correlation = 0 is not always 0? when a linear slope is zero, what is the slope in the equation? when does regression of a curve become true when does the slope of the line when correlation = 0 is not always 0 when is slope of the line not always true when does slope of line indicate zero correlation when is a slope of line true? when is the slope of the line when correlation = 0 is not always 0 where does the slope of a linear trend come from when is slope of line always 0? when does correlation = 0 not always 0 when does slope on curve when is slope of line true between the variables when the slope of the line is zero, the correlation between the variables is when is slope of line when correlation = 0 is not always 0? when is the slope of line which is a slope of a linear curve when the correlation is not always 0? does slope of line mean zero when a slope of a curve is zero does it always occur?