124k views
2 votes
Write the slope-intercept form of the equation of the line described.

Through: (5, 4), parallel to y = x-5

User NinaNa
by
4.7k points

1 Answer

6 votes

Answer: y = x - 1

Step-by-step explanation:

Find the slope of the parallel line

When two lines are parallel, they have the same slope.

⇒ if the slope of this line = 1

then the slope of the parallel line (m) = 1

Determine the equation

We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line: (5, 4)

⇒ y - 4 = 1 (x - 5)

∴ y - 4 = x - 5

We can also write the equation in the slope-intercept form by making y the subject of the equation and expanding the bracket to simplify:

since y - 4 = x - 5

y = x - 1

To test my answer, I drew a Desmos Graph with the information provided in the question and my answer.

Write the slope-intercept form of the equation of the line described. Through: (5, 4), parallel-example-1
User Isobolev
by
3.8k points