| Find the sloution for the following equation in slope-intercept form (y = mx + b) | |
| A line with a slope of 3 that goes through (2,9) | |
| y = 3x + b | Plug in the slope which is 3, in the place of the m |
| 9 = 3(2) + b | Plug in the coordinates of the y and x, in the y and x spots. |
| 9 = 6 + b | Times 3 by two. |
| 9 = 6 + b
-6 -6 |
Take away the 6 in both sides of the equal sign. |
| 9-6 = b | Now take 6 away from 9. |
| 3 = b | Now you have b. |
| Solution: y = 3x + 3 | Plug in the slope and b and you have your equation. |
| Voltage | |
| V=IR :Solve for R | |
| V= IR
I I |
Divide both sides by I |
| Solution:
V=R
I |
| Find
the x in the equation:
7x + 7 = 2x + 2 |
|
| 7x
+ 7 = 2x + 2
-2 -2 |
Take two away on both sides. |
| 7x
+ 5 = 2x
-7x -7x |
Take 7x away on both sides. |
| -5
= -5x
-5 -5 |
Now divide both sides by -5. |
| Solution: -1 = x |