IDNLearn.com: Your go-to resource for finding precise and accurate answers. Find reliable solutions to your questions quickly and accurately with help from our dedicated community of experts.

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]


Sagot :

To determine which point lies on the circle represented by the equation [tex]\((x-3)^2 + (y+4)^2 = 6^2\)[/tex], we can follow these steps:

1. Understand the Equation: A circle with a center at [tex]\((3, -4)\)[/tex] and radius [tex]\(6\)[/tex] is given by the equation [tex]\((x-3)^2 + (y+4)^2 = 36\)[/tex].

2. Plugging the Points into the Circle's Equation:
- Option A: [tex]\((9, -2)\)[/tex]
[tex]\[ (9-3)^2 + (-2+4)^2 = 6^2 \][/tex]
[tex]\[ 6^2 + 2^2 = 36 \][/tex]
[tex]\[ 36 + 4 = 40 \quad (\text{not equal to } 36) \][/tex]
Therefore, [tex]\((9, -2)\)[/tex] is not on the circle.

- Option B: [tex]\((0, 11)\)[/tex]
[tex]\[ (0-3)^2 + (11+4)^2 = 6^2 \][/tex]
[tex]\[ (-3)^2 + 15^2 = 36 \][/tex]
[tex]\[ 9 + 225 = 234 \quad (\text{not equal to } 36) \][/tex]
Therefore, [tex]\((0, 11)\)[/tex] is not on the circle.

- Option C: [tex]\((3, 10)\)[/tex]
[tex]\[ (3-3)^2 + (10+4)^2 = 6^2 \][/tex]
[tex]\[ 0^2 + 14^2 = 36 \][/tex]
[tex]\[ 0 + 196 = 196 \quad (\text{not equal to } 36) \][/tex]
Therefore, [tex]\((3, 10)\)[/tex] is not on the circle.

- Option D: [tex]\(( -9, 4)\)[/tex]
[tex]\[ (-9-3)^2 + (4+4)^2 = 6^2 \][/tex]
[tex]\[ (-12)^2 + 8^2 = 36 \][/tex]
[tex]\[ 144 + 64 = 208 \quad (\text{not equal to } 36) \][/tex]
Therefore, [tex]\((-9, 4)\)[/tex] is not on the circle.

- Option E: [tex]\(( -3, -4)\)[/tex]
[tex]\[ (-3-3)^2 + (-4+4)^2 = 6^2 \][/tex]
[tex]\[ (-6)^2 + 0^2 = 36 \][/tex]
[tex]\[ 36 + 0 = 36 \quad (\text{equal to } 36) \][/tex]
Therefore, [tex]\((-3, -4)\)[/tex] is on the circle.

After evaluating each point, we find that the correct answer is:

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