Question #a1d8c
1 Answer
Nov 2, 2016
Explanation:
Choose values of x and substitute them into f(x) to obtain the corresponding y-coordinates.
For
f(x)=(-9)/(x+2)f(x)=−9x+2
•x=color(blue)(-1)rArrf(color(blue)(-1))=(-9)/1=-9to(-1,-9)∙x=−1⇒f(−1)=−91=−9→(−1,−9)
•x=color(blue)(-5)rArrf(color(blue)(-5))=(-9)/(-3)=3to(-5,3)∙x=−5⇒f(−5)=−9−3=3→(−5,3)
•x=color(blue)(1)rArrf(color(blue)(1))=(-9)/3=-3to(1,-3)∙x=1⇒f(1)=−93=−3→(1,−3)
•x=color(blue)(7)rArrf(color(blue)(7))=(-9)/9=-1to(7,-1)∙x=7⇒f(7)=−99=−1→(7,−1) Note x = -2 cannot be used as
(-9)/0−90 is undefined.
graph{(-9)/(x+2) [-20, 20, -10, 10]}
