Lines in the Plane
Practice Answers
Squaring each side and simplifying, we eventually have .
Practice 3: The
point is on the circle when it is 5 units from the center so . Then so
Practice 8: The line
has slope so the slope of the parallel line is .
Using the form and the point ( –2, 3) on the line, we have
Practice 9: The line has slope so the slope of the perpendicular line is
.
Using the form and the point ( 2, –5) on the line, we have so and or .