In exercise 1-5, for each function or system, tell whether the question is relevant?

1. What are the coordinates of the vertex?
a. x+4y=9
b. 4y+x^2=9
c. y=1/4x^2

Would I use the vertex formula:
[-b/2a , f(-b/2a)] to find the answer to a, b and c? Super confused. Or is there another way of telling how to find out if the question is relevant? :O

Question

In exercise 1-5, for each function or system, tell whether the question is relevant?

1. What are the coordinates of the vertex? 
a. x+4y=9 
b. 4y+x^2=9 
c. y=1/4x^2 

Would I use the vertex formula:
[-b/2a , f(-b/2a)] to find the answer to a, b and c? Super confused. Or is there another way of telling how to find out if the question is relevant? :O

dan815 · Answer

a) is a line

dan815 · Answer

b and c are parabolas so they can have a vertex

dan815 · Answer

do you know that y = x^2 is a parabola this is the base function

dan815 · Answer

when x = 0 y=0 this is where the vertex is

dan815 · Answer

0,0

dan815 · Answer

having a diffrent slope wont change it so C) is still 0,0

dan815 · Answer

now b re arrange in terms of y

dan815 · Answer

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