The slope of a graph provides general information about a graph. It tells you how much the y value of the graph increases (or decreases, if the slope is negative) for a given increase in x value.
if you look at the general equation of a graph y = a x + b
the value "a" represents the slope and the "b" value represents the value of y when
x = 0.
When the graph is not a straight line, the discussion gets more complicated, however the slope still describes changes in the value of the graph (you have to use calculus for this situation.)
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You have to know the slopes of both lines. -- Take the two slopes. -- The lines are perpendicular if (one slope) = -1/(the other slope), or the product of the slopes equals to -1.
function of agar slopes
Slopes that are dangerously high and/or steep.
same slopes = parallel lines
can a line have two slopes