Select the correct answer.

Which point lies on the circle represented by the equation [tex]\((x-3)^2+(y+4)^2=6^2\)[/tex]?

A. [tex]\((9,-2)\)[/tex]

B. [tex]\((0,11)\)[/tex]

C. [tex]\((3,10)\)[/tex]

D. [tex]\((-9,4)\)[/tex]

E. [tex]\((-3,-4)\)[/tex]



Answer :

To determine which of the given points lies on the circle represented by the equation [tex]\((x-3)^2 + (y+4)^2 = 6^2\)[/tex], we'll substitute each point into the circle's equation and see which one satisfies it.

1. Point (9, -2)
- Substitute [tex]\( x = 9 \)[/tex] and [tex]\( y = -2 \)[/tex] into the equation:
[tex]\[ (9-3)^2 + (-2+4)^2 = 6^2 \][/tex]
[tex]\[ (6)^2 + (2)^2 = 36 \][/tex]
[tex]\[ 36 + 4 = 40 \neq 36 \][/tex]
This point does not lie on the circle.

2. Point (0, 11)
- Substitute [tex]\( x = 0 \)[/tex] and [tex]\( y = 11 \)[/tex] into the equation:
[tex]\[ (0-3)^2 + (11+4)^2 = 6^2 \][/tex]
[tex]\[ (-3)^2 + (15)^2 = 36 \][/tex]
[tex]\[ 9 + 225 = 234 \neq 36 \][/tex]
This point does not lie on the circle.

3. Point (3, 10)
- Substitute [tex]\( x = 3 \)[/tex] and [tex]\( y = 10 \)[/tex] into the equation:
[tex]\[ (3-3)^2 + (10+4)^2 = 6^2 \][/tex]
[tex]\[ (0)^2 + (14)^2 = 36 \][/tex]
[tex]\[ 0 + 196 = 196 \neq 36 \][/tex]
This point does not lie on the circle.

4. Point (-9, 4)
- Substitute [tex]\( x = -9 \)[/tex] and [tex]\( y = 4 \)[/tex] into the equation:
[tex]\[ (-9-3)^2 + (4+4)^2 = 6^2 \][/tex]
[tex]\[ (-12)^2 + (8)^2 = 36 \][/tex]
[tex]\[ 144 + 64 = 208 \neq 36 \][/tex]
This point does not lie on the circle.

5. Point (-3, -4)
- Substitute [tex]\( x = -3 \)[/tex] and [tex]\( y = -4 \)[/tex] into the equation:
[tex]\[ (-3-3)^2 + (-4+4)^2 = 6^2 \][/tex]
[tex]\[ (-6)^2 + (0)^2 = 36 \][/tex]
[tex]\[ 36 + 0 = 36 = 36 \][/tex]
This point satisfies the equation of the circle.

Therefore, the point that lies on the circle is [tex]\( \boxed{(-3, -4)} \)[/tex].