The line l l\,l has equation 2x+5y−20=02x + 5y - 20 = 02x+5y−20=0
l l\,l crosses the xxx-axis at the point A A\,A and the yyy-axis at the point BBB.
Write down the coordinates of A A\,A and of BBB.
Find the area of triangle OABOABOAB, where O O\,O is the origin.
The point C C\,C has coordinates (5,2)(5, 2)(5,2). Show that C C\,C lies on lll.
76 exam-style questions on WJEC A Level Maths 1.3 Coordinate geometry in the (x, y) plane, covering 1.3.1 Coordinate geometry in the (x, y) plane, 1.3.2 Coordinate geometry in the (x, y) plane, 1.3.3 Coordinate geometry in the (x, y) plane, and 1.3.4 Coordinate geometry in the (x, y) plane. Each one has a worked solution and a mark scheme showing where the marks go.