The equation of the parabola with vertex (-5,3), with axis parallel to the x-axis, opening to the right and with x-intercept x = 4 is___________.

Respuesta :

Answer:

[tex]x=1(y-3)^2-5[/tex]

Step-by-step explanation:

we need to find the equation of the parabola with vertex (-5,3), with axis parallel to the x-axis.

general equation of horizontal parabola is

[tex]x=a(y-k)^2+h[/tex]

where (h,k) is the vertex

(-5,3) is the vertex. h=-5 and k=3. plug in the values in the general equation

[tex]x=a(y-3)^2-5[/tex]

Now find out the value of 'a' using x intercept (4,0)

[tex]4=a(0-3)^2-5[/tex]

[tex]4=a(-3)^2-5[/tex]

[tex]4=9a-5[/tex]

Add 5 on both sides

[tex]9=9a[/tex]

a=1

the equation becomes

[tex]x=1(y-3)^2-5[/tex]