Question

the area of triangleABC with vertices A(-2,1),B(1,1), AND C(3,4) is -4.5 find the length of AC,giving your answer correct to 2 decimal places

Answer 1

Answer:

The number plane (Cartesian plane) is divided into four quadrants by two perpendicular axes called the x-axis (horizontal line) and the y-axis (vertical line). These axes intersect at a point called the origin. The position of any point in the plane can be represented by an ordered pair of numbers (x, y). These ordered pairs are called the coordinates of the point.

The point with coordinates (4, 2) has been plotted on the Cartesian plane shown. The coordinates of the origin are (0, 0).