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Questions

1 / 10

Time

Score

Evaluating rational Functions

Evaluate $f\left(x\right)=\frac{2}{x-3}$ for $x=-3$

$\frac{2}{-6}$

$\frac{7}{-2}$

$\frac{2}{-3}$

Evaluate $f(3)\ in\ f(x)=\frac{1}{x}.$

Evaluate $f\left(x\right)=\frac{x^2-3}{x}$ for $x=5$

$\frac{22}{5}$

$\frac{12}{5}$

$\frac{20}{5}$

Evaluate $f(-1)\ in\ f(x)=\frac{x^2+1}{x}.$

Evaluate $f(1)\ in\ f(x)=\frac{x^2+1}{x}.$

Evaluate $f(1)\ in\ f(x)=\frac{2x+1}{2x-1}.$

Evaluate $f\left(x\right)=\frac{x+5}{x-2}$ for $x=2$ .

$\frac{7}{-2}$

undefined

4

Evaluate $f(8)\ in\ f(x)=\frac{2}{x}.$

Evaluate $f\left(x\right)=\frac{x^2}{x-1}$ for $x=4$

$\frac{20}{5}$

$\frac{16}{3}$

$\frac{16}{5}$

Evaluate $f\left(x\right)=\frac{x+2}{2x+5}$ for $x=1$

$\frac{2}{4}$

$\frac{2}{7}$

$\frac{3}{7}$

Questions

Time

Score

Evaluating rational Functions

Evaluate $f\left(x\right)=\frac{2}{x-3}$ for $x=-3$

$\frac{2}{-6}$

$\frac{7}{-2}$

$\frac{2}{-3}$

Evaluate $f(3)\ in\ f(x)=\frac{1}{x}.$

Evaluate $f\left(x\right)=\frac{x^2-3}{x}$ for $x=5$

$\frac{22}{5}$

$\frac{12}{5}$

$\frac{20}{5}$

Evaluate $f(-1)\ in\ f(x)=\frac{x^2+1}{x}.$

Evaluate $f(1)\ in\ f(x)=\frac{x^2+1}{x}.$

Evaluate $f(1)\ in\ f(x)=\frac{2x+1}{2x-1}.$

Evaluate $f\left(x\right)=\frac{x+5}{x-2}$ for $x=2$ .

$\frac{7}{-2}$

undefined

4

Evaluate $f(8)\ in\ f(x)=\frac{2}{x}.$

Evaluate $f\left(x\right)=\frac{x^2}{x-1}$ for $x=4$

$\frac{20}{5}$

$\frac{16}{3}$

$\frac{16}{5}$

Evaluate $f\left(x\right)=\frac{x+2}{2x+5}$ for $x=1$

$\frac{2}{4}$

$\frac{2}{7}$

$\frac{3}{7}$

Incorrect

Great!

Questions

Time

Score

Evaluating rational Functions

Evaluate ﻿f(x)=2x−3f\left(x\right)=\frac{2}{x-3}f(x)=x−32​﻿ for ﻿x=−3x=-3x=−3﻿

﻿2−6\frac{2}{-6}−62​﻿

﻿7−2\frac{7}{-2}−27​﻿

﻿2−3\frac{2}{-3}−32​﻿

Evaluate ﻿f(3) in f(x)=1x.f(3)\ in\ f(x)=\frac{1}{x}.f(3) in f(x)=x1​.﻿

Evaluate ﻿f(x)=x2−3xf\left(x\right)=\frac{x^2-3}{x}f(x)=xx2−3​﻿ for ﻿x=5x=5x=5﻿

﻿225\frac{22}{5}522​﻿

﻿125\frac{12}{5}512​﻿

﻿205\frac{20}{5}520​﻿

Evaluate ﻿f(−1) in f(x)=x2+1x.f(-1)\ in\ f(x)=\frac{x^2+1}{x}.f(−1) in f(x)=xx2+1​.﻿

Evaluate ﻿f(1) in f(x)=x2+1x.f(1)\ in\ f(x)=\frac{x^2+1}{x}.f(1) in f(x)=xx2+1​.﻿

Evaluate ﻿f(1) in f(x)=2x+12x−1.f(1)\ in\ f(x)=\frac{2x+1}{2x-1}.f(1) in f(x)=2x−12x+1​.﻿

Evaluate ﻿f(x)=x+5x−2f\left(x\right)=\frac{x+5}{x-2}f(x)=x−2x+5​﻿ for ﻿x=2x=2x=2﻿ .

﻿7−2\frac{7}{-2}−27​﻿

undefined

4

Evaluate ﻿f(8) in f(x)=2x.f(8)\ in\ f(x)=\frac{2}{x}.f(8) in f(x)=x2​.﻿

Evaluate ﻿f(x)=x2x−1f\left(x\right)=\frac{x^2}{x-1}f(x)=x−1x2​﻿ for ﻿x=4x=4x=4﻿

﻿205\frac{20}{5}520​﻿

﻿163\frac{16}{3}316​﻿

﻿165\frac{16}{5}516​﻿

Evaluate ﻿f(x)=x+22x+5f\left(x\right)=\frac{x+2}{2x+5}f(x)=2x+5x+2​﻿ for ﻿x=1x=1x=1﻿

﻿24\frac{2}{4}42​﻿

﻿27\frac{2}{7}72​﻿

﻿37\frac{3}{7}73​﻿

Incorrect

Great!

Evaluate $f\left(x\right)=\frac{2}{x-3}$ for $x=-3$

$\frac{2}{-6}$

$\frac{7}{-2}$

$\frac{2}{-3}$

Evaluate $f(3)\ in\ f(x)=\frac{1}{x}.$

Evaluate $f\left(x\right)=\frac{x^2-3}{x}$ for $x=5$

$\frac{22}{5}$

$\frac{12}{5}$

$\frac{20}{5}$

Evaluate $f(-1)\ in\ f(x)=\frac{x^2+1}{x}.$

Evaluate $f(1)\ in\ f(x)=\frac{x^2+1}{x}.$

Evaluate $f(1)\ in\ f(x)=\frac{2x+1}{2x-1}.$

Evaluate $f\left(x\right)=\frac{x+5}{x-2}$ for $x=2$ .

$\frac{7}{-2}$

Evaluate $f(8)\ in\ f(x)=\frac{2}{x}.$

Evaluate $f\left(x\right)=\frac{x^2}{x-1}$ for $x=4$

$\frac{20}{5}$

$\frac{16}{3}$

$\frac{16}{5}$

Evaluate $f\left(x\right)=\frac{x+2}{2x+5}$ for $x=1$

$\frac{2}{4}$

$\frac{2}{7}$

$\frac{3}{7}$