In above image use vertical line test to identify whether a relation is a function or not . Vertical line test means draw various vertical lines in graph and it must cut graph only once i.e. every vertical line must intersect graph only once . if lines intersects graph in more than 1 point than relation is not a function . In short, a relation is a function iff for every value of x there's only one value of y , for any case x has 2 or more than 2 values of y it's not a function.

4 0

3 years ago

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Use the method of completing the square to write the equation of the given parabola in this form:

Fudgin [204]

This is a very challenging equation but I'll try my best!

y-k=a(x-h)^2
$Vertex(1,1) ----\ \textgreater \ y-1=a(x-1)^2 
contains~ the ~point (0,-3) 

----\ \textgreater \ 1-1=a(0-,-3)^2 

----\ \textgreater \ 1=-2a 

----\ \textgreater \ a=1/-2

Equation: Y-1=1/-2(x-2)^2$

4 0

3 years ago

Paul's Pizzeria sells 45 cheese pizzas and 20 pepperoni pizzas each week.

Zina [86]

Ratio is demonstrated by " : " sign.
Ratio of cheese: pepperoni
45:20
Simplify and divide each side by 5
9:4

A. 9:4

Hope this helps :)

6 0

3 years ago