# Chapter 13 - Section 13.1 - The Parabola and the Circle - Vocabulary and Readiness Check: 11

The parabola opens downwards.

#### Work Step by Step

The standard form of a parabola is: $ax^2+bx+c$, and whenever the coefficient of a is a positive number, it opens upwards, if it is negative, then it opens downwards. The coefficient of a in this case is negative 1 so it opens downwards.

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