kirkhester1
kirkhester1 kirkhester1
  • 20-06-2019
  • Mathematics
contestada

The parabola y = x² - 4 opens:
A.) up
B.) down
C.) right
D.) left

Respuesta :

Cricetus
Cricetus Cricetus
  • 20-06-2019

Answer:

Up

Step-by-step explanation:

Here the easy rules to remember the orientation of the parabolas are

a) If x is squared it opens up or down. And its coefficient of {[tex]x^{2}[tex] is negative it opens down.

b) If y is squared it opens side ways right or left. It its coefficient of [tex]y^{2}[/tex]

Hence in our equation of parabola

[tex]y = x^ 2-4[/tex]

x is squared and its coefficient is positive , hence it opens up towards positive y axis.

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