The process we will follow to find the solution will be to first find the slope between the two given points, then apply a condition to find a perpendicular slope, and finally, we will find the equation of the perpendicular bisector line.
Step 1. Find the slope between the points R and S.
The points R and S are as follows:
[tex]\begin{gathered} R(-1,6) \\ S(5,5) \end{gathered}[/tex]
We will label these points as follows:
[tex]\begin{gathered} x_1=-1 \\ y_1=6 \\ x_2=5 \\ y_2=5 \end{gathered}[/tex]
And we need to find the slope "m" using the formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Substituting our values and solving the operations:
[tex]\begin{gathered} m=\frac{5-6}{5-(-1)} \\ m=\frac{-1}{5+1} \\ m=\frac{-1}{6} \end{gathered}[/tex]
The slope between R and S is m=-1/6
Step 2. We need to find a line that is the perpendicular bisector of the segment R to S. We will call the slope of this perpendicular line
[tex]m_p_{}[/tex]
And use the following condition for the slopes of two perpendicular lines:
[tex]m\cdot m_p=-1[/tex]
From this it follows that:
[tex]m_p=\frac{-1}{m}[/tex]
Where m is the slope we found in step 1:
[tex]m_p=\frac{-1}{-\frac{1}{6}}[/tex]
Solving this division we find the slope of the perpendicular line:
[tex]\begin{gathered} m_p=\frac{6}{1} \\ m_p=6 \end{gathered}[/tex]
Step 3. We have the slope of the perpendicular line, but, to be a perpendicular bisector, this perpendicular line needs to pass through the midpoint between R and S.
Calculate the midpoint between R and S using the following formula:
[tex](\frac{x_1+x_2}{2}_{},\frac{y_1+y_2_{}}{2})[/tex]
Substituting the values for x1, x2, y1, and y2 that had in step 1:
[tex](\frac{-1+5}{2},\frac{6+5}{2})[/tex]
solving the operations:
[tex](\frac{4}{2},\frac{11}{2})[/tex][tex](2,5.5)[/tex]
The midpoint is at (2, 2.5).
Step 4. At this point we know the slope of the perpendicular bisector line:
[tex]m_p=6[/tex]
And we also know that it has to pass through the midpoint:
[tex](2,2.5)[/tex]
The next step is to label the coordinates of the midpoint for reference:
[tex]\begin{gathered} x_0=2 \\ y_0=2.5 \end{gathered}[/tex]
And use the point-slope equation:
[tex]y-y_0=m_p(x-x_0)[/tex]
Substituting in this equation the known values:
[tex]y-2.5=6(x-2)[/tex]
And to have this equation in standard form we need to solve for y:
[tex]y=6(x-2)+2.5[/tex]
We can simplify by using the distributive property on the right-hand side of the equation:
[tex]\begin{gathered} y=6x-12+2.5 \\ y=6x-9.5 \end{gathered}[/tex]
The equation of the perpendicular bisector line in standard form is:
[tex]y=6x-9.5[/tex]
Answer:
[tex]y=6x-9.5[/tex]