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Which point lies on the line described by the equation below?

[tex]\[ y + 3 = 2(x - 1) \][/tex]

A. [tex]\((1, -3)\)[/tex]

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

C. [tex]\((-1, -6)\)[/tex]

D. [tex]\((2, 1)\)[/tex]

E. [tex]\((1, -4)\)[/tex]

F. [tex]\((2, 9)\)[/tex]


Sagot :

To determine which point lies on the line described by the equation [tex]\( y + 3 = 2(x - 1) \)[/tex], we need to test each point by substituting the coordinates [tex]\( (x, y) \)[/tex] into the equation and verifying if the equation holds true. Let’s simplify the line equation first:

[tex]\[ y + 3 = 2(x - 1) \][/tex]

Rewriting it in the standard form [tex]\( y \)[/tex] as a function of [tex]\( x \)[/tex]:

[tex]\[ y + 3 = 2x - 2 \][/tex]

Subtracting 3 from both sides, we get:

[tex]\[ y = 2x - 5 \][/tex]

Now we will test each point:

A. (1, -3)
[tex]\[ y = 2(1) - 5 \][/tex]
[tex]\[ -3 = 2 - 5 \][/tex]
[tex]\[ -3 = -3 \quad \text{(True)} \][/tex]

B. (0, 0)
[tex]\[ y = 2(0) - 5 \][/tex]
[tex]\[ 0 = -5 \quad \text{(False)} \][/tex]

C. (-1, -6)
[tex]\[ y = 2(-1) - 5 \][/tex]
[tex]\[ -6 = -2 - 5 \][/tex]
[tex]\[ -6 = -7 \quad \text{(False)} \][/tex]

D. (2, 1)
[tex]\[ y = 2(2) - 5 \][/tex]
[tex]\[ 1 = 4 - 5 \][/tex]
[tex]\[ 1 = -1 \quad \text{(False)} \][/tex]

E. (1, -4)
[tex]\[ y = 2(1) - 5 \][/tex]
[tex]\[ -4 = 2 - 5 \][/tex]
[tex]\[ -4 = -3 \quad \text{(False)} \][/tex]

F. (2, 9)
[tex]\[ y = 2(2) - 5 \][/tex]
[tex]\[ 9 = 4 - 5 \][/tex]
[tex]\[ 9 = -1 \quad \text{(False)} \][/tex]

From the calculations, the only point that satisfies the equation [tex]\( y + 3 = 2(x - 1) \)[/tex] is:

A. (1, -3)

Therefore, the point [tex]\( (1, -3) \)[/tex] lies on the line described by the equation.