Which pairs of lines are perpendicular? y=3x-5y=3x−5 and y=3x+4y=3x+4

y=3x-5y=3x−5 and y=1/3x-5y=1/3x−5

y=3x-5y=3x−5 and y=-1/3x-5y=−1/3x−5

y=3x-5y=3x−5 and y=-3x-5y=−3x−5

How to determine whether two known pairs of points are on the same line.

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to –(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from –6. the value of y must be positive since the variable is inside absolute value signs.