# Line slope calculator 4x-9y=-9

**Straight line given by points A[0; 1] and B[9; 5]**

## Calculation:

**Slope-intercept form of line:**y = 0.4444x+1

**Canonical form of the line equation:**4x-9y+9 = 0

**Parametric form of the line equation:**

x = 9t

y = 4t+1 ; t ∈ R

**Slope:**m = 0.4444

**Slope angle of line: φ =**23°57'45″ = 0.4182 rad

**X intercept:**x

_{0}= -2.25

**Y intercept:**y

_{0}= q = 1

**Distance line from the origin:**d

_{0}= 0.9138

**The length of the segment AB: |AB| =**9.8489

**Vector: AB =**(9; 4)

**Normal vector: n =**(4; -9)

**Midpoint of the segment AB: M =**[4.5; 3]

**Perpendicular Bisector equation:**9x+4y-52.5 = 0

**Vector OA = (0; 1) ; |OA| = 1**

**Vector OB = (9; 5) ; |OB| = 10.2956**

**Scalar product OA .OB = 5**

**Angle ∠ AOB = 60°56'43″ = 1.0637 rad**