Coordinates

Reading and plotting coordinates

1 a) Write the coordinates of the points labelled A to D.

b) Plot and label these points on the coordinate grid.

E (7, –3) F (–5, 0) G (–1, 3) H (3, 2) i) Join points E to F to G to H to E with straight lines.

Relationships between coordinates

2 a) Find the relationship between the x- and y -values in these coordinates.

(–6, –4) (–4, –2) (–2, 0) (1, 3) (3, 5) b) Plot these points and label the line with its equation. ii) Name the shape you have drawn.

3 Find the relationship between the x- and y -values in these coordinates.

(–6, –12) (–4, –8) (–2, –4) (1, 2) (3, 6)

4 Find the relationship between the x- and y -values in these coordinates.

(–6, –8) (–4, –6) (–2, –4) (1, –1) (3, 1) (5, 3)

5 Here are the equations of some straight lines: y = 3x y = x + 3 y = –3x y = x – 3

Circle the equation of the line that passes through all these points: (–5, 15) (0, 0) (2, –6)