My Math Forum  

Go Back   My Math Forum > High School Math Forum > Pre-Calculus

Pre-Calculus Pre-Calculus Math Forum


Reply
 
LinkBack Thread Tools Display Modes
April 3rd, 2019, 11:42 AM   #1
Newbie
 
Joined: Apr 2019
From: British Columbia

Posts: 1
Thanks: 0

Equation for square root function graph

Hi,

https://imgur.com/EjUeSm8

I'm trying to determine the equation for the square root function.

Starting point of the graph is at (3,5) pointing down and left and is a square root function. Second point is on (2,4).

There seems to be a typo in the explanation in the answer.

How do I set up the equation to get radicand as -x+3?




Thanks
lofe04 is offline  
 
April 4th, 2019, 06:13 AM   #2
Math Team
 
skeeter's Avatar
 
Joined: Jul 2011
From: Texas

Posts: 3,034
Thanks: 1621

transformations to the parent function $y = \sqrt{x}$ ...

reflection over the x-axis

$y = -\sqrt{x}$

reflection over the y-axis

$y = -\sqrt{-x}$

horizontal shift right 3 units

$y = -\sqrt{-(x-3)}$

vertical shift upward 5 units

$y = -\sqrt{-x+3}+5$


graph showing each transformation step attached
Attached Images
File Type: jpg transformations.jpg (44.4 KB, 2 views)
skeeter is offline  
Reply

  My Math Forum > High School Math Forum > Pre-Calculus

Tags
equation, function, graph, root, square



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sos need help with square root function catmurr Calculus 6 February 2nd, 2017 01:40 AM
is a square root a function or not confusion taylor_1989_2012 Pre-Calculus 6 September 27th, 2016 10:44 AM
Square root function and quadratic function hhmathgeek Algebra 3 April 25th, 2016 03:38 PM
Equation with square root Engasaurus Algebra 2 April 29th, 2013 12:36 PM
square root equation sony102 Elementary Math 4 May 26th, 2009 09:32 PM





Copyright © 2019 My Math Forum. All rights reserved.