The figure is a circle with centre O and a chord PQ subtending an angle of 70° at the centre, O.
The value of the angle marked θ is:
20°.
35°.
70°.
55°.
The circumference of a circle in terms of π, with radius 3cm is:
9π cm.
18π cm.
6π cm.
3π cm.
The lines with equations y = m₁x + c and y = m₂x + k are perpendicular if:
m₁m₂ = 1.
m₁m₂ = -1.
m₁ = m₂.
2m₁ = m₂.
The y-intercept of the line 3y + 4x = 12 is:
3.
-4.
4.
7.
The gradient of the line 2y - 4x = 3 is:
2.
-2.
