a general formula for a parabola is $y^{2}=4px$. what is the value of $p$ in the equation $y^{2}=-4x$?\n$p =…
a general formula for a parabola is $y^{2}=4px$. what is the value of $p$ in the equation $y^{2}=-4x$?\n$p = - 4$\n$p=-1$\n$p = 1$\n$p = 4$
Answer
Explanation:
Step1: Compare the two equations
Compare $y^{2}=4px$ and $y^{2}=-4x$.
Step2: Solve for $p$
Set $4p=-4$, then $p=\frac{-4}{4}=-1$.
Answer:
B. $P = - 1$