The missing reason in step 8 is the substitution property.
<h3>What is substitution property?</h3>
It should be noted that according to substitution property, if x = y, then x can be substituted for y in any equation.
When a variable is equal to another variable, then the variables can be interchangeable.
In this case, the missing reason in step 8 is the substitution property.
Learn more about substitution property on:
brainly.com/question/12289041
#SPJ1
Sry i suck in math brother
Answer:
Step-by-step explanation:
B yes their slopes are negative reciprocals
(m - n)(r - s) Hope this helps and heve a nice day!
