Writing the Equation of a Line | MathHelp.com - By MathHelp.com
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| 00:0-1 | A line with a slope of 3/4 passes through the | |
| 00:04 | .128 right ? It's equation in slope intercept form . | |
| 00:11 | Remember that slope intercept form is the same thing as | |
| 00:16 | Y equals mx plus B form . And to write | |
| 00:25 | the equation of a line in Y equals mx plus | |
| 00:29 | B form . We need to know the values of | |
| 00:32 | M and B to find the value of em . | |
| 00:37 | Remember that M represent slope And were given that the | |
| 00:41 | slope of the line is 3/4 . So we know | |
| 00:45 | that the value of M is 3/4 , Which means | |
| 00:51 | that we can substitute a 3/4 into our formula for | |
| 00:55 | em . Next to find the value of B . | |
| 01:02 | were given that the line passes through the .128 , | |
| 01:08 | Which means that we can use 12 and eight as | |
| 01:11 | our values for X&Y . So we substitute a 12 | |
| 01:22 | in for X And an eight in for why . | |
| 01:27 | And we have eight equals 3/4 times 12 plus B | |
| 01:36 | , solving for B , three forth tons , 12 | |
| 01:40 | is nine , so we have A Equals nine Plus | |
| 01:46 | B And subtracting nine from both sides . Yeah , | |
| 01:53 | negative one equals B , so M equals 3/4 and | |
| 02:04 | B equals negative one . And we substitute these values | |
| 02:09 | into our formula for M and B . To get | |
| 02:14 | y equals 3/4 x -1 . So the equation of | |
| 02:27 | a line with a slope of 3/4 and passes through | |
| 02:31 | the .128 Is why equals 3/4 x -1 . |
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