At Westonci.ca, we connect you with experts who provide detailed answers to your most pressing questions. Start exploring now! Get expert answers to your questions quickly and accurately from our dedicated community of professionals. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

Which is not an equation of the line passing through (3,6) and (1,-2)?

A. [tex]\( y - 6 = 4(x - 3) \)[/tex]
B. [tex]\( y + 2 = 4(x - 1) \)[/tex]
C. [tex]\( y - 2 = 4(x + 1) \)[/tex]
D. [tex]\( y = 4x - 6 \)[/tex]


Sagot :

To determine which equation is not the equation of the line passing through the points [tex]\((3, 6)\)[/tex] and [tex]\((1, -2)\)[/tex], let's analyze the situation in detail.

1. Calculate the slope ([tex]\(m\)[/tex]) of the line passing through the points [tex]\((3, 6)\)[/tex] and [tex]\((1, -2)\)[/tex].

The formula for the slope [tex]\(m\)[/tex] is:
[tex]\[ m = \frac{y_2 - y_1}{x_2 - x_1} \][/tex]
Plugging in the coordinates:
[tex]\[ m = \frac{-2 - 6}{1 - 3} = \frac{-8}{-2} = 4 \][/tex]

2. Find the equation of the line using the point-slope form:

The point-slope form of the equation of a line is:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
Using the slope [tex]\(m = 4\)[/tex] and the point [tex]\((3, 6)\)[/tex]:
[tex]\[ y - 6 = 4(x - 3) \][/tex]

Simplifying this equation to the slope-intercept form [tex]\(y = mx + b\)[/tex]:
[tex]\[ y - 6 = 4(x - 3) \][/tex]
[tex]\[ y - 6 = 4x - 12 \][/tex]
[tex]\[ y = 4x - 6 \][/tex]
So, the equation of the line is [tex]\(y = 4x - 6\)[/tex].

3. Verify each given choice by simplifying to see if it matches [tex]\(y = 4x - 6\)[/tex]:

A. [tex]\(y - 6 = 4(x - 3)\)[/tex]
[tex]\[ y - 6 = 4x - 12 \][/tex]
[tex]\[ y = 4x - 6 \][/tex]

This matches the line's equation [tex]\(y = 4x - 6\)[/tex].

B. [tex]\(y + 2 = 4(x - 1)\)[/tex]
[tex]\[ y + 2 = 4x - 4 \][/tex]
[tex]\[ y = 4x - 6 \][/tex]

This matches the line's equation [tex]\(y = 4x - 6\)[/tex].

C. [tex]\(y - 2 = 4(x + 1)\)[/tex]
[tex]\[ y - 2 = 4x + 4 \][/tex]
[tex]\[ y = 4x + 6 \][/tex]

This does NOT match the line's equation [tex]\(y = 4x - 6\)[/tex].

D. [tex]\(y = 4x - 6\)[/tex]

This is already in the correct form and matches the line's equation [tex]\(y = 4x - 6\)[/tex].

The incorrect choice is C. Therefore, the equation that is not the equation of the line passing through the points [tex]\((3, 6)\)[/tex] and [tex]\((1, -2)\)[/tex] is:
~[tex]\[ \boxed{C} \][/tex]