Linear Relationships Flashcards
1
Q
What is the distance formula?
A
d=√((x_2-x_1)²+(y_2-y_1)²)
2
Q
What is the mid-point formula?
A
M = ( x 1 + x 2 / 2 , y 1 + y 2 / 2 )
3
Q
What is the gradient formula?
A
g = y2-y1 / x2-x1
4
Q
What is the equation of a line formula?
A
y-y1 = m (x-x1)
5
Q
What is the parallel line formula?
A
m1 = m2
6
Q
What is the perpendicular line formula?
A
m1 X m2 = -1
7
Q
What are the steps for solving equations with fractions?
A
- fractions onto one side –> look where the letter is
- simplify into 1 fraction
- get rid of denominators (multiply)
