### Home > PC > Chapter 6 > Lesson 6.1.4 > Problem 6-63

6-63.

Using Δ

*PQR*, find the equations for the following lines. Homework Help ✎The perpendicular bisector of

. The median line that goes from

*Q*to the midpoint of. The altitude of Δ

*PQR*from*Q*to side.

1. Find the slope of the ⊥ line.

2. Find the midpoint (*D*)

3. Substitute into the point-slope form.

1. Given the points *D* and *Q*, find the slope

2. Use the point-slope form of a line to find an equation.

1. Find the slope of the ⊥ line.

2. Then using the slope and pt. *Q*, use the form *y* = *mx* + *b* to find *b*.

3. Then substitute back m and b back into the form.