To find the slope of a line from its equation, we need to examine the given equation in its standard linear form: [tex]\( y = mx + b \)[/tex], where [tex]\( m \)[/tex] represents the slope and [tex]\( b \)[/tex] represents the y-intercept.
Given the equation of the line:
[tex]\[ y = 5x - 4 \][/tex]
We can see that it is already in the standard linear form. By comparing it directly with [tex]\( y = mx + b \)[/tex], we identify the coefficient of [tex]\( x \)[/tex] as the slope [tex]\( m \)[/tex].
In this case:
[tex]\[ m = 5 \][/tex]
Therefore, the slope of the line of best fit is:
[tex]\[ 5 \][/tex]
The correct answer is:
[tex]\[ \boxed{5} \][/tex]
