Determine which of the lines are parallel and which of the lines are perpendicular. Line a passes through (-3, 1) and (1, 7).
Line b passes through (2, 3) and (8, 0).
passes through (-1, –9) and (5, 3).
- 6) and (-6, 1).
Line
Line d passes through (8,-6) and (-6,1)

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Write the equations in logarithmic form 7^3=343

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.