Find the vertex and directrix of the parabola. y2+14y+ 4x +45= 0 vertex: directrix: step by step solution please

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.6: Quadratic Functions
Problem 30E
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1. (11.1 #10)  Find the vertex and directrix of the parabola. 

 

  y2+14y+ 4x +45= 0   

 

 

 

 

 

  vertex:   

 

 

  directrix: 

 

step by step solution please

Expert Solution
Step 1

Consider the equation of parabola,

y2+14y+4x+45=0

To write the equation in standard form,

y2+14y+4x+45=0y2+14y=-4x-45add72bothsides,y2+14y+72=-4x-45+72y+72=-4x-45+49y--72=-4x+4y--72=4·-1·x-1........(1)

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