The lines with equations y = m₁x + c and y = m₂x + k are perpendicular if:
m₁m₂ = 1.
2m₁ = m₂.
m₁m₂ = -1.
m₁ = m₂.
A triangle ABC with vertices A (2, 5), B (5, - 2) and C (0, -1) is reflected along the y-axis to give the image triangle A/B/C/.
The coordinates of the vertices of A/B/C/ are:
A/(-2, 5) , B/(5,2) , C/(0, 1).
A/(-2, 5) , B/(-5,-2) , C/(0, -1).
A/(-2, 5) , B/(-5,2) , C/(0, 1).
A/(2, 5) , B/(-5,2) , C/(0, 1).
A and B are two sets such that A = {3, 4} B = {x, y), the cartesian product A × B is:
(3,x), (3.y), (4.x), (4,y).
{(3, x), (4, y)}.
{(3, x), (3, y),(4, x),(4, y)}.
(3x, 4y).
The sum of the three interior angles of a triangle is:
270°.
90°.
360°.
180°.
The x-coordinate of the the points M (x, y) of the points P(0, 3) and Q(4, -3) is:
4.
-6.
3.
2.
