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Are these lines perpendicular, parallel, or neither based on their slopes?

[tex]\[
\begin{array}{l}
6x = 2y - 2 \\
y = 3x + 12
\end{array}
\][/tex]

The [tex]$\square$[/tex] of their slopes is [tex]$\square$[/tex], so the lines are [tex]$\square$[/tex].


Sagot :

Let's analyze the given equations step by step to determine the relationship between the lines.

### Step 1: Rewrite the equations in slope-intercept form (y = mx + b)

#### Equation 1: [tex]\( 6x = 2y - 2 \)[/tex]
First, we simplify and rearrange the equation to isolate [tex]\( y \)[/tex]:
[tex]\[ 6x + 2 = 2y \][/tex]

Next, we divide each term by 2 to solve for [tex]\( y \)[/tex]:
[tex]\[ 3x + 1 = y \][/tex]

This is now in slope-intercept form [tex]\( (y = mx + b) \)[/tex], where the slope [tex]\( m \)[/tex] is 3.

#### Equation 2: [tex]\( y = 3x + 12 \)[/tex]
This equation is already in the slope-intercept form [tex]\( y = mx + b \)[/tex].

The slope [tex]\( m \)[/tex] is 3.

### Step 2: Compare the slopes

We have determined that:
- The slope (m) of the first line is 3.
- The slope (m) of the second line is 3.

### Step 3: Determine the relationship between the lines

To understand the relationship:
- If the slopes [tex]\( m_1 \)[/tex] and [tex]\( m_2 \)[/tex] are equal, then the lines are parallel.
- If the product of slopes [tex]\( m_1 \times m_2 \)[/tex] equals -1, then the lines are perpendicular.
- If neither of these conditions is met, the lines are neither parallel nor perpendicular.

Given that both slopes are 3 ([tex]\( m_1 = 3 \)[/tex] and [tex]\( m_2 = 3 \)[/tex]):
- The slopes are equal.

Therefore, the lines are parallel.

In conclusion:
The slope of their slopes is 3 and 3, so the lines are parallel.