Solve the system of equations below by graphing. x^2-2x+y-3=0 x2+y=0 What is the solution rounded to the nearest hundredth? (–2.25, –1.5) (–1.5, –2.25) (–0.82, –0.68) (–0.68, –0.82)

Respuesta :

Answer:

[tex](-1.5,-2.25)[/tex]

Step-by-step explanation:

The first function is [tex]x^2-2x+y-3=0[/tex].


We make y the subject of this function to obtain,

[tex]y=3+2x-x^2[/tex].

This is graph will open downwards because [tex]a=-1\:<\:0[/tex].


At  y-intercept of this graph, [tex]x=0[/tex].


[tex]\Rightarrow y=3+2(0)-(0)^2[/tex]


[tex]\Rightarrow y=3[/tex]


The y-intercept is [tex](0,3)[/tex].


At x-intercept [tex]y=0[/tex].


[tex]0=3+2x-x^2[/tex]


[tex]0=(x+1)(x-3)[/tex]


[tex]\Rightarrow x=-1,x=3[/tex].


The x-intercepts are,

[tex](-1,0),(3,0)[/tex]

Also the vertex form of the function is,

[tex]y=-(x-1)^2+4[/tex].


Therefore the vertex of the parabola is [tex](1,4)[/tex].


We plot all the points obtained and draw a smooth curve to obtain the curve as show in the diagram.


The second function is

[tex]x^2+y=0[/tex]


[tex]\Rightarrow y=-x^2[/tex]


This is the graph of the basic quadratic function [tex]y=x^2[/tex] that has been turned upside down.

This graph also has the vertex,y-intercept and x-intercept all at [tex](0,0)[/tex].


We now graph this too on the same graph sheet as the first one to obtain the blue graph as shown in the diagram.


These two graphs intersect at the point, [tex](-1.5,-2.25)[/tex].


Therefore the correct answer is B






Ver imagen kudzordzifrancis

Answer:

B. (-1.5, -2.25) EDG 2021

Step-by-step explanation:

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