If a pair of perpendicular lines are rotated, which is true? a) rotating perpendicular lines result in parallel lines. b) the lines remain perpendicular only if rotated 180°. c) the lines remain perpendicular only if rotated 360°. d) rotated perpendicular lines always remain perpendicular lines.

D Rotated perpendicular lines always remain perpendicular lines

D) Rotated perpendicular lines always remain perpendicular lines.

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: