GEN-MATH

Performance Task # 1

• f(x)=39x + 9​
• y=39x+9​
• x=39y+9​
• 3(3x=9y+9​)3
• 3x=9y+9
• 3x−9=9y
• 93x−9​= 99y​
• 93x−9​= y
• f−1(x)=93x−9​

Table of Values :

f(x)=39x+9​

f−1(x)=93x−9​

• f(−2)=39(−2)+9​ = 3−18+9​ = 3−9​ f(−2)=−3
• f(−1)=39(−1)+9​ = 3−9+9​ f(−1)=0
• f(0)=39(0)+9​ = 30+9​ = 39​ f(0)=3
• f(1)=39(1)+9​ =318​ f(1)=6

f(2)=39(2)+9​

=318+9​

=327​

f(2)=9