do now!!! simplify the following rational expressions: 1. 2. 3
Post on 03-Jan-2016
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DO NOW!!!Simplify the following rational expressions:1. 2.
3.
Graphing Rational Functions
Vertical Asymptote: a vertical line that a rational function approaches but can never actually cross• Expressed as x = “?” lines• We find vertical asymptotes by
finding the values where the denominator of a rational function equals ZERO.
Graphing Rational Functions
Horizontal Asymptote: a horizontal line that a rational function approaches but can never actually cross• Expressed as y = “?” lines
Finding Horizontal Asymptotes
1. If the numerator has a lower highest power then the denominator, the HA is at the line y = 0.
2. If the numerator and the denominator have the same highest power, divide the leading coefficients to find the HA.
3. If the numerator has a higher highest power than the denominator, then the function has no horizontal asymptote.
X and Y-Intercepts!!!• To find the y-intercept, plug in “0” for
“x”.
• To find the x-intercept, set the numerator of the fraction equal to “0” and
Examples!!!For the following functions:a) Find the x and y-intercepts.b) Find the vertical asymptote.c) Find the horizontal asymptote.
1.
THINK!?!?
It takes Amir 7 more minutes than Mr. Hammer to solve a really hard math problem. Together, they can complete the math problem in 12 minutes. How long does it take Amir to complete the problem on his own?
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