1. Write down the coordinates of the x -intercept and y -intercept of the lines represented on each of the following graphs.
(i) y 10
8 6 4 2
–2 0 –2
2 4 6 8 10 x (ii) y 10
8 6 4 2
–2 0 –2
2 4 6 8 x (iii) y
8 6 4 2
–10 –8 –6 –4 –2 0 –2
2 x (iv) –2
–4 –2
–6 –8
–10
2. Write down the points of intersection of the following red and blue lines shown on the Cartesian plane. (i)
y 5
4 3 2 1
–1 0 –1
1 2 3 4 5 x (ii) y 5
4 3 2 1
–5 –4 –3 –2 –1 0 –1
1 x (iii) y 5
4 3 2 1
–5 –4 –3 –2 –1 0 –1
1 x
3. By fi nding the point of intersection in each case, fi nd the value of x and the value of y that solve each pair of simultaneous equations (coloured red and blue). (i)