Square root functions

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• Middelbare school
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• Leerjaar 2

Square root functions

Grab your notebook and calculator

Square root functions

y=√​2x−1​​​

Square root functions

x	0	1	2	3	4	5
y

y=√​2x−1​​​

Square root functions

x	0	1	2	3	4	5
y

y=√​2x−1​​​

y=√​2⋅3−1​​​

Square root functions

x	0	1	2	3	4	5
y

y=√​2x−1​​​

y=√​2⋅3−1​​​

y=√​5​​​

Square root functions

x	0	1	2	3	4	5
y

y=√​2x−1​​​

y=√​2⋅3−1​​​

y=√​5​​​

y

≈

2.24

Square root functions

x	0	1	2	3	4	5
y				2,24

y=√​2x−1​​​

y=√​2⋅3−1​​​

y=√​5​​​

y

≈

2.24

Square root functions

y=√​x−1​​​

Square root functions

y=√​x−1​​​

Square root functions

y=−2√​x+4​​​

Square root functions

y=√​1−x​​​+2.5

Finding the starting point

Step 1: Take the expression underneath the square root and solve for = 0

Step 2: Fill in the found x-value and calculate y

Example: Find the starting point of

Step 1:                                                             Step 2: 

                                                                                               Starting point (1 ; 2.5)

y=√​1−x​​​+2.5

1−x=0

1=x

y=√​1−1​​​+2.5

y=2.5

Calculate
if

y=5√​x​​​+4

x=2

Calculate                             , if

y=5√​x​​​+4

x=2

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