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1.

The lines with equations 2x + 7y = 23 and 2x - y = -1 meet at the point:

(1, 3)

(3, 1)

(1, -3)

2.

The lines with equations 2x + y = -1 and 3x - y = 21 meet at the point:

(22, -45)

(4, 9)

(4, -9)

3.

A line has gradient . Which of these represents the perpendicular gradient?

Zero

4.

What is the gradient of a line perpendicular to ?

5.

A line with gradient -3 which passes through the point (1, -2) has equation:

y - 3x = 5

y + 3x = 1

y + 3x = -3

6.

A line makes an angle of 60° with the positive direction of the x-axis. What is its gradient?

7.

Find the point of intersection of the lines and .

(4,11)

(11,4)

(-4,-1)

8.

Which of the diagrams below shows three concurrent lines?

a

b

c

d

9.

What is the equation of the line passing through (-2,1) and (4,3)?

y = 3x + 7

3y = x + 1

3y = x + 5

10.

Four points have co-ordinates P(12,5), Q(3,7), R(-1,-1) and S(5,11). Which three points are collinear?

P,Q,R

P,R,S

Q,R,S