Zeros of a Fuction: Linking function properties to its representation

Examples with solutions for Zeros of a Fuction: Linking function properties to its representation

Exercise #1

Determine the points of intersection of the function

y=(x5)(x+5) y=(x-5)(x+5)

With the X

Video Solution

Step-by-Step Solution

In order to find the point of the intersection with the X-axis, we first need to establish that Y=0.

 

0 = (x-5)(x+5)

When we have an equation of this type, we know that one of these parentheses must be equal to 0, so we begin by checking the possible options.

x-5 = 0
x = 5

 

x+5 = 0
x = -5

That is, we have two points of intersection with the x-axis, when we discover their x points, and the y point is already known to us (0, as we placed it):

(5,0)(-5,0)

This is the solution!

Answer

(5,0),(5,0) (5,0),(-5,0)

Exercise #2

Determine the points of intersection of the function

y=x(x1) y=x(-x-1)

With the X

Video Solution

Answer

(1,0),(0,0) (-1,0),(0,0)

Exercise #3

Determine the points of intersection of the function

y=(4x+8)(x+1) y=(4x+8)(x+1)

With the X

Video Solution

Answer

(1,0),(2,0) (-1,0),(-2,0)

Exercise #4

Determine the points of intersection of the function

y=x(x+5) y=x(x+5)

With the X

Video Solution

Answer

(5,0),(0,0) (-5,0),(0,0)

Exercise #5

Consider the following function:

y=x(x1) y=x(x-1)

Determine the points of intersection with x.

Video Solution

Answer

(0,0),(1,0) (0,0),(1,0)

Exercise #6

Determine the points of intersection of the function

y=(x1)(x+10) y=(x-1)(x+10)

With the X

Video Solution

Answer

(1,0),(10,0) (1,0),(-10,0)

Exercise #7

Determine the points of intersection of the function

y=(x+7)(x+2) y=(x+7)(x+2)

With the X

Video Solution

Answer

(2,0),(7,0) (-2,0),(-7,0)

Exercise #8

Determine the points of intersection of the function

y=(x1)(x1) y=(x-1)(x-1)

With the X

Video Solution

Answer

(1,0) (1,0)

Exercise #9

Determine the points of intersection of the function

y=(x11)(x+1) y=(x-11)(x+1)

With the X

Video Solution

Answer

(1,0),(11,0) (-1,0),(11,0)

Exercise #10

Determine the points of intersection of the function

y=(x+3)(x3) y=(x+3)(x-3)

With the X

Video Solution

Answer

(3,0),(3,0) (3,0),(-3,0)

Exercise #11

Determine the points of intersection of the function

y=(x2)(x+3) y=(x-2)(x+3)

With the X

Video Solution

Answer

(3,0),(2,0) (-3,0),(2,0)

Exercise #12

Determine the points of intersection of the function

y=(x3)(x+3) y=(x-3)(x+3)

With the X

Video Solution

Answer

(3,0),(3,0) (-3,0),(3,0)

Exercise #13

Determine the points of intersection of the function

y=(x+8)(x9) y=(x+8)(x-9)

With the X

Video Solution

Answer

(8,0),(9,0) (-8,0),(9,0)

Exercise #14

Determine the points of intersection of the function

y=(x6)(x5) y=(x-6)(x-5)

With the X

Video Solution

Answer

(6,0),(5,0) (6,0),(5,0)

Exercise #15

Determine the points of intersection of the function

y=x(x+1) y=x(x+1)

With the X

Video Solution

Answer

(1,0),(0,0) (-1,0),(0,0)

Exercise #16

Determine the points of intersection of the function

y=(x1)(2x+1) y=(x-1)(2x+1)

With the X

Video Solution

Answer

(12,0),(1,0) (-\frac{1}{2},0),(1,0)

Exercise #17

Determine the points of intersection of the function

y=2x(2x+4) y=2x(2x+4)

With the X

Video Solution

Answer

(2,0),(0,0) (-2,0),(0,0)

Exercise #18

Determine the points of intersection of the function

y=(x2)(x+4) y=(x-2)(x+4)

With the X

Video Solution

Answer

(2,0),(4,0) (2,0),(-4,0)

Exercise #19

Determine the points of intersection of the function

y=(x2)(x+4) y=(x-2)(x+4)

With the X

Video Solution

Answer

(4,0),(2,0) (-4,0),(2,0)

Exercise #20

Determine the points of intersection of the function

y=(x+3)(4x4) y=(x+3)(4x-4)

With the X

Video Solution

Answer

(3,0),(1,0) (-3,0),(1,0)