Answer:
C.) -5
Step-by-step explanation:
The slope formula is<em> rise/run</em>, in other words,<em> rise divided by run</em> or the y variable divided by the corresponding x variable.
In this question, we are told that the y-value is "<em>20</em> feet <em>above</em>" meaning this is the rise and the run is "<em>4 </em>feet<em> from</em>"
To find the slope all we have to do is <em>divide</em> 20 by 4 giving us<em> 5</em>. Since the ladder is <em>going down</em> we know that we have to place a <em>negative sign</em> before the slope giving us our final answer of <em>-5</em>