Question

Edgar wants to plot the ordered pair (1.8, - 1.2) on a coordinate plane on each axis one grid square equals 0.1 . Starting at the origin how can edgar fine (1.8, -1.2)

Answer 1

For finding the order pair (1.8,-1.2) in the coordinate plan he has to follow the following procedure,

Here, each axis one grid square equals 0.1.

In X -axis,

1 unit = 0.1

That is, for finding the point 1.8 in x-axis,

He has to go 18 unit right side from the origin,

⇒ he get the point (1.8,0) in X-axis.

Now in y-axis,

1 unit = 0.1

Thus, finally for finding the point (1.8,-1.2), he has to go vertically downward to 12 unit from the point (1.8, 0)

Answer 2

For better understanding of the answer see the attached figure :

length of grid square on each axis on coordinate plane is 1 units

But here it is given to be 0.1 units.

So, in order to find the ordered pair (1.8 , -1.2) we need to first locate 1.8 on x-axis and -1.2 on y-axis

Now, as each axis one grid square equals 0.1 . So,we go 18 units on positive x -axis and mark point (1.8,0) and 12 units on negative y-axis and mark point (0,-1.2) and draw vertical and horizontal lines passing through these points respectively. And the point of intersection of these lines is our required point (1.8,-1.2)