I. Equation
with one variable:
| 9x = -6(1.5 - 2x) | Given equation |
| 9x = -9 + 12x | 1. Use the distributive property |
| 9x - 12x = -9 + 12x - 12x | 2. Subtract 12x from both sides |
| -3x = -9 | 3. Combine like terms |
| x = 3 | 4. Divide both sides by -3 |
II. Literal
equation:
(Formula for area of trapezoid)
| A = (b1 + b2) h
2 |
Solve for b2 |
| 2A = (b1 + b2) h | 1. Multiply both sides by 2 |
| 2A = b1 + b2
h |
2. Divide both sides by h |
| 2A - b1 = b1 + b2
- b1
h |
3. Subtract b1 from both sides |
| 2A - b1 = b2
h |
4. Combine like terms |
III. Equation for line in point- slope form:
Given: Line containing
points with coordinates: (3,1) and (5,2)
(x1,y1)
(x2,y2)
Find: Equation
for the line containing the given coordinates in point-
slope form
1. Find slope (m) using
this formula: y2-y1
x2-x1
-----> 2-1
= 1 = 0.5
slope = .5
5-3
2
2. Choose one pair of
coordinates (ex. (3,1)), and plug in the numbers
in this point- slope formula: y- y1=
m (x- x1)
|
|
\/
y- 1 = .5 (x- 3)
Thank you for visiting
my webpage !!!
I hope my tips were helpful to you.
If you would like to see more,
click here to see other
students' pages.
If you would like to visit my school's webpage,
click here.
If you would like to visit my teacher's webpage,
click here.
Created by Janine H
[email protected]