# Line slope calculator 7x+9y=90

**Straight line given by points A[0; 10] and B[9; 3]**

## Calculation:

**Slope-intercept form of line:**y = -0.7778x+10

**Canonical form of the line equation:**7x+9y-90 = 0

**Parametric form of the line equation:**

x = 9t

y = -7t+10 ; t ∈ R

**Slope:**m = -0.7778

**Slope angle of line: φ =**-37°52'30″ = -0.661 rad

**X intercept:**x

_{0}= 12.8571

**Y intercept:**y

_{0}= q = 10

**Distance line from the origin:**d

_{0}= 7.8935

**The length of the segment AB: |AB| =**11.4018

**Vector: AB =**(9; -7)

**Normal vector: n =**(7; 9)

**Midpoint of the segment AB: M =**[4.5; 6.5]

**Perpendicular Bisector equation:**9x-7y+5 = 0

**Vector OA = (0; 10) ; |OA| = 10**

**Vector OB = (9; 3) ; |OB| = 9.4868**

**Scalar product OA .OB = 30**

**Angle ∠ AOB = 71°33'54″ = 1.249 rad**