Math 2303 Section 4.2
Section 4.2 Writing Equations of Lines
Point‐Slope Form and Slope Form Equations of Lines
Slope‐Intercept Form:
is slope and is the y‐intercept
y
mx
b
(
)
Point‐Slope Form:
is slope and the
is a point on the line.
y
y
m
x
x
(
x
,
y
)
1
1
1
1
3 and which passes through the point
Example 1: Find the equation of the line which has the slope
5, 2 .
2, 3
0, 2
Example 2: Find the equation of the line which passes through the points
Example 3: Find the equation of the line which has an x‐intercept of 3 and a y‐intercept of 2.
1