SOLUTION: Hello I need help on graphing this equation. It says to graph without a calculator but I don't know how to get the correct answer. graph the following: y = sqrt5-x Thank yo

Algebra ->  Graphs -> SOLUTION: Hello I need help on graphing this equation. It says to graph without a calculator but I don't know how to get the correct answer. graph the following: y = sqrt5-x Thank yo      Log On


   

Question 99852: Hello I need help on graphing this equation.
It says to graph without a calculator but I don't know how to get the correct answer.
graph the following: y = sqrt5-x
Thank you,
Kumi
Found 2 solutions by jim_thompson5910, edjones:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The graph y=sqrt%28x%29 looks like this


+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+sqrt%28x%29%29+ Graph of y=sqrt%28x%29



So if you negate the x to get y=sqrt%28-x%29 it flips the graph



+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+sqrt%28-x%29%29+ Graph of y=sqrt%28-x%29



Now when you add 5 to -x you get y=sqrt%285-x%29 which shifts the graph 5 units to the right



+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+sqrt%285-x%29%29+ Graph of y=sqrt%285-x%29

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
y = sqrt5-x
This is a linear equation and sqrt(5)is a constant= 2.2 or thereabouts.
get 2 points like in any other linear graph and draw a straight line between them.
when x=0 y=2.2 (0,2.2)
when x=-5 y=2.2+5=7.2 (-5,-2.8)
try a couple yourself.
Ed
graph%28500%2C500%2C-10%2C10%2C-10%2C10%2C2.236067977-x%29