Given the equations y = 4x + 5 and y = 4x - 7, what is the relationship

of the two lines?

O

A. Perpendicular

B. Parallel

C. Skew

D. Neither

Respuesta :

Answer:

Parallel

Step-by-step explanation:

Given

[tex]y = 4x + 5[/tex]

[tex]y = 4x - 7[/tex]

Required

Determine the relationship

Both lines are parallel. This is so, because they have the same slope.

The equation of a line is:

[tex]y = mx + b[/tex]

Where

[tex]m = slope[/tex]

For [tex]y = 4x + 5[/tex]

[tex]m_1= 4[/tex]

For [tex]y = 4x - 7[/tex]

[tex]m_2 = 4[/tex]

By comparison:

[tex]m_1 = m_2 = 4[/tex]

Since both slopes are the same, then the lines are parallel