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 :

Let's determine which point lies on the circle represented by the equation [tex]\((x - 3)^2 + (y + 4)^2 = 6^2\)[/tex].

We know that the equation of the circle is given by:
[tex]\[ (x - 3)^2 + (y + 4)^2 = 36 \][/tex]

To find which point lies on the circle, we need to check each given point to see if it satisfies the equation.

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

Substitute [tex]\( x = 9 \)[/tex] and [tex]\( y = -2 \)[/tex] into the circle equation:
[tex]\[ (9 - 3)^2 + (-2 + 4)^2 = 6^2 \][/tex]
[tex]\[ (6)^2 + (2)^2 = 36 \][/tex]
[tex]\[ 36 + 4 = 40 \quad \text{(not on the circle)} \][/tex]

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

Substitute [tex]\( x = 0 \)[/tex] and [tex]\( y = 11 \)[/tex] into the circle equation:
[tex]\[ (0 - 3)^2 + (11 + 4)^2 = 6^2 \][/tex]
[tex]\[ (-3)^2 + (15)^2 = 36 \][/tex]
[tex]\[ 9 + 225 = 234 \quad \text{(not on the circle)} \][/tex]

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

Substitute [tex]\( x = 3 \)[/tex] and [tex]\( y = 10 \)[/tex] into the circle equation:
[tex]\[ (3 - 3)^2 + (10 + 4)^2 = 6^2 \][/tex]
[tex]\[ (0)^2 + (14)^2 = 36 \][/tex]
[tex]\[ 0 + 196 = 196 \quad \text{(not on the circle)} \][/tex]

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

Substitute [tex]\( x = -9 \)[/tex] and [tex]\( y = 4 \)[/tex] into the circle equation:
[tex]\[ (-9 - 3)^2 + (4 + 4)^2 = 6^2 \][/tex]
[tex]\[ (-12)^2 + (8)^2 = 36 \][/tex]
[tex]\[ 144 + 64 = 208 \quad \text{(not on the circle)} \][/tex]

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

Substitute [tex]\( x = -3 \)[/tex] and [tex]\( y = -4 \)[/tex] into the circle equation:
[tex]\[ (-3 - 3)^2 + (-4 + 4)^2 = 6^2 \][/tex]
[tex]\[ (-6)^2 + (0)^2 = 36 \][/tex]
[tex]\[ 36 + 0 = 36 \quad \text{(on the circle)} \][/tex]

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

The answer is:
[tex]\[ \boxed{E} \][/tex]