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Which equation represents the line that passes through points (0,6) and (2,0)?

A. [tex]\(y = -\frac{1}{3}x + 2\)[/tex]
B. [tex]\(y = -\frac{1}{3}x + 6\)[/tex]
C. [tex]\(y = -3x + 2\)[/tex]
D. [tex]\(y = -3x + 6\)[/tex]


Sagot :

To determine which equation represents the line that passes through the points [tex]\((0, 6)\)[/tex] and [tex]\((2, 0)\)[/tex], we follow these steps:

1. Find the slope (m):
The formula for the slope ([tex]\(m\)[/tex]) between two points [tex]\((x_1, y_1)\)[/tex] and [tex]\((x_2, y_2)\)[/tex] is given by:
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Plugging in the coordinates [tex]\((x_1, y_1) = (0, 6)\)[/tex] and [tex]\((x_2, y_2) = (2, 0)\)[/tex]:
[tex]\[ m = \frac{0 - 6}{2 - 0} = \frac{-6}{2} = -3 \][/tex]

2. Find the y-intercept (b):
The y-intercept is the value of [tex]\(y\)[/tex] when [tex]\(x = 0\)[/tex]. Since one of our points is [tex]\((0, 6)\)[/tex], the y-intercept is clearly:
[tex]\[ b = 6 \][/tex]

3. Construct the equation of the line:
The general form of the equation of a line is:
[tex]\[ y = mx + b \][/tex]
Substituting the slope ([tex]\(m = -3\)[/tex]) and the y-intercept ([tex]\(b = 6\)[/tex]) into this formula:
[tex]\[ y = -3x + 6 \][/tex]

4. Match the equation with the given choices:
From the choices provided:
[tex]\[ 1. \quad y = -\frac{1}{3}x + 2 \][/tex]
[tex]\[ 2. \quad y = -\frac{1}{3}x + 6 \][/tex]
[tex]\[ 3. \quad y = -3x + 2 \][/tex]
[tex]\[ 4. \quad y = -3x + 6 \][/tex]
It becomes clear that the correct equation is:
[tex]\[ \boxed{y = -3x + 6} \][/tex]

Thus, the correct equation that represents the line passing through the points [tex]\((0, 6)\)[/tex] and [tex]\((2, 0)\)[/tex] is:

[tex]\(\boxed{y = -3x + 6}\)[/tex]

Therefore, the answer is the 4th choice.