Please help me with these.

Determine whether the graphs of y=8x+5 and -y=8x-5 are parallel, perpendicular, coincident, or none of these. a. coincident b. parallel c. perpendicular d. none of these

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)