Indicate whether the lines are parallel, perpendicular, or neither and explain why. 1. -2x + 8y=9 and x-4y=21
2. 12x-3y=18 and 4x-6y=-2
3. y=13x+2 and 2y-26x=1
4. x=-3 and y=3

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.