Write the equation $y = 5 x ^ { 2 } - 4$ using function notation.
A) $y = 5 x ^ { 2 } - 4$
B) $y ( x ) = 5 x ^ { 2 } - 4$
C) $5 x ^ { 2 } - 4 = 0$
D) $5 x ^ { 2 } - 4 - y = 0$
E) $f \left( 5 x ^ { 2 } - 4 \right)$

Question

Write the equation $y = 5 x ^ { 2 } - 4$ using function notation.  
A) $y = 5 x ^ { 2 } - 4$
B) $y ( x ) = 5 x ^ { 2 } - 4$
C) $5 x ^ { 2 } - 4 = 0$
D) $5 x ^ { 2 } - 4 - y = 0$
E)   $f \left( 5 x ^ { 2 } - 4 \right)$

Quizplus · Accepted Answer

Function notation is typically written as $f(x) = $ some expression, where $f$ is the name of the function and $x$ is the input variable. In this case, $y(x) = 5x^2 - 4$ correctly translates the given equation into function notation, indicating that $y$ is a function of $x$.

Write the Equation y=5x2−4y = 5 x ^ { 2 } - 4y=5x2−4

Write the Equation $y = 5 x ^ { 2 } - 4$