How do you write the equation of a line that passes through (1,1) and has slope 1/4?

2 Answers
Apr 1, 2015

y-1= 1/4 (x-1)

Apr 7, 2015
  • The Point-Slope form of the Equation of a Straight Line is:

(y-k)=m*(x-h)
m is the Slope of the Line

(h,k) are the co-ordinates of any point on that Line.

  • Here, we have been given the coordinates (h,k) of 1 point on that line as (1,1)
    And the Slope m is given as 1/4

Substituting the values of h, k and m in the Point-Slope form, we get

(y-1)=(1/4)*(x-1)
The above will be the Equation of the Line in Point-Slope form.

  • If we need it in the Slope Intercept Form, we need to follow these steps:

Multiplying both sides with 4, we get:

4*(y-1)=x-1

4y-4=x-1

4y=x-1+4

4y=x+3

We get the equation of the line as :
y=(1/4)*x+3/4

The graph will look like this:

graph{y=(1/4)*x+3/4 [-10, 10, -5, 5]}