Examples
55 , (1,1)(1,1)
Step 1
Step 1.1
Use the formula for the equation of a line to find bb.
y=mx+by=mx+b
Step 1.2
Substitute the value of mm into the equation.
y=(5)⋅x+by=(5)⋅x+b
Step 1.3
Substitute the value of xx into the equation.
y=(5)⋅(1)+by=(5)⋅(1)+b
Step 1.4
Substitute the value of yy into the equation.
1=(5)⋅(1)+b1=(5)⋅(1)+b
Step 1.5
Find the value of bb.
Step 1.5.1
Rewrite the equation as (5)⋅(1)+b=1(5)⋅(1)+b=1.
(5)⋅(1)+b=1(5)⋅(1)+b=1
Step 1.5.2
Multiply 55 by 11.
5+b=15+b=1
Step 1.5.3
Move all terms not containing bb to the right side of the equation.
Step 1.5.3.1
Subtract 55 from both sides of the equation.
b=1-5b=1−5
Step 1.5.3.2
Subtract 55 from 11.
b=-4b=−4
b=-4b=−4
b=-4b=−4
b=-4b=−4
Step 2
Now that the values of mm (slope) and bb (y-intercept) are known, substitute them into y=mx+by=mx+b to find the equation of the line.
y=5x-4y=5x−4
Step 3