Question

The coordinate plane has the following points A=(2, 1), B=(5, 1), C=(7,2), and 1 point

Answer 1

Answer:

d = 3

Step-by-step explanation:

Coordinate Plane

The image provided shows the four points given:

A=(2, 1), B=(5, 1), C=(7,2), D=(4,2).

It can be clearly seen the length of CD is just the difference of their x-coordinates:

CD = 7 - 4 = 3

We can also use the formula of the distance.

Given two points C(x,y) and D(w,z), the distance between them is:

$d=\sqrt{(z-y)^2+(w-x)^2}$

$d=\sqrt{(2-2)^2+(7-4)^2}$

$d=\sqrt{0^2+3^2}$

$d=\sqrt{9}$

d = 3