# The distance between the pair of points that are graphed below.

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 1.8, Problem 10E

(a)

To determine

## To calculate: The distance between the pair of points that are graphed below.

Expert Solution

The distance between the pair of points is 5 units

### Explanation of Solution

Given information:

The points are depicted graphically,

Formula used:

Distance d(A,B) between two points A=(x1,y1) and B=(x2,y2) in the Cartesian plane is denoted by d(A,B)=(x2x1)2+(y2y1)2 .

Calculation:

Consider the points that are depicted graphically,

The two points are A(2,2) and B(2,1) .

Recall that the distance d(A,B) between two points A=(x1,y1) and B=(x2,y2) in the Cartesian plane is denoted by d(A,B)=(x2x1)2+(y2y1)2 .

Evaluate the distance between A(2,2) and B(2,1) .

d(A,B)=(22)2+(12)2=16+9=25=5

Thus, the distance between the pair of points is 5 units.

(b)

To determine

### To calculate: The midpoint of the segment that joins the pair of points that are graphed below.

Expert Solution

The midpoint of the segment that joins the pair of points is (0,12) .

### Explanation of Solution

Given information:

The points are depicted graphically,

Formula used:

Midpoint of the segment that joins two points A=(x1,y1) and B=(x2,y2) in the Cartesian plane is denoted by (x1+x22,y1+y22) .

Calculation:

Consider the points that are depicted graphically,

The two points are A(2,2) and B(2,1) .

Recall that the midpoint of the segment that joins two points A=(x1,y1) and B=(x2,y2) in the Cartesian plane is denoted by (x1+x22,y1+y22) .

Evaluate the midpoint of the segment that joins A(2,2) and B(2,1) .

(x1+x22,y1+y22)=(2+(2)2,2+(1)2)=(02,12)=(0,12)

Thus, the midpoint of the segment that joins the pair of points is (0,12) .

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