ind the x- and y-intercepts of the rational function. (If an answer does not exi

Algebra
Tutor: None Selected Time limit: 1 Day

r(x) = 

x − 1
x + 2
x-intercept    
(xy) = 
  
y-intercept    
(xy) = 
  


r(x) = 

5
x2 + 6x − 6
x-intercept    
(xy) = 
  
y-intercept    
(xy) = 
  


Mar 25th, 2015

To find the x-intercept, you let y=0 and solve for x. 

To find the y-intercept, you let x=0, and solve for y. 

For the first one, 

x-intercept: 0= (x-1) / (x+2), solving you get x=1. So (1,0) is the x-intercept.  

y-intercept: y = (0-1)/(0+2) = -1/2. So (0, -1/2) is the y-intercept. 


For the second one,

x-intercept: 0 = 5/(x^2+6x-6). This has no solution, so it does not exist. 

y-intercept: y = 5/ (0+0-6) = -5/6. So (0, -5/6) is the y-intercept. 

Mar 25th, 2015

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