Answered

Square EFGH is drawn on a coordinate plane. Diagonal GE is on the line [tex]y - 3 = 3(x + 4)[/tex]. What is the slope of diagonal FH?

A. [tex]-\frac{1}{3}[/tex]
B. [tex]\frac{1}{3}[/tex]
C. [tex]-3[/tex]
D. [tex]3[/tex]



Answer :

To solve this problem carefully, let's analyze the given information step by step.

1. Identify the Equation of Diagonal GE:

The line equation for diagonal GE is provided as [tex]\( y - 3 = 3(x + 4) \)[/tex]. We need to transform this equation into slope-intercept form, [tex]\( y = mx + b \)[/tex], where [tex]\( m \)[/tex] represents the slope.

Start by expanding and simplifying:
[tex]\[ y - 3 = 3(x + 4) \][/tex]
[tex]\[ y - 3 = 3x + 12 \][/tex]
[tex]\[ y = 3x + 15 \][/tex]

From this final equation, we can see that the slope [tex]\( m \)[/tex] of diagonal GE is [tex]\( 3 \)[/tex].

2. Understand the Properties of a Square:

In a square, the diagonals are perpendicular bisectors of each other. This means that if two lines are perpendicular, the product of their slopes is [tex]\(-1\)[/tex].

3. Calculate the Slope of Diagonal FH:

If diagonal GE has a slope of [tex]\( 3 \)[/tex], the slope of diagonal FH must satisfy the condition of perpendicularity:
[tex]\[ (\text{slope of GE}) \times (\text{slope of FH}) = -1 \][/tex]
[tex]\[ 3 \times (\text{slope of FH}) = -1 \][/tex]

Solving for the slope of FH:
[tex]\[ \text{slope of FH} = \frac{-1}{3} \][/tex]

4. Verify the Correct Answer:

Based on our calculations, the slope of diagonal FH is [tex]\( -\frac{1}{3} \)[/tex].

In conclusion, the correct answer for the slope of diagonal FH is:
[tex]\[ -\frac{1}{3} \][/tex]