Lines in the Planes

Question 1

What is the equation of the Slope

Answer 1

(y2-y1)
———– = m
(x2-x1)

Question 2

What is the Point-Slope Form?

Answer 2

y-y1 = m(x-x1)

Question 3

What is the equation of the Two-Point Form?

Answer 3

y2-y1
———— (x-x1)
x1-x2

= y-y1

Question 4

What is the equation of a garph?

Answer 4

y = mx + b

Question 5

Summary of equation of lines:

1. General Form
2. Vertical Line
3. Horizontal Line
4. Slope-Intercept
5. Point-Slope Form

Answer 5

1. Ax + Bc + C = 0
2. x = a
3. y = b
4. y = mx + b
5. y - y1 = m (x - x1)

Question 6

If two line are parallel, then:

Answer 6

m1 = m2

Question 7

If two lines are perpendicular, then:

Answer 7

-1
——- = m1
m2