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- 1. Writing the equations of lines<br />Point-slope form<br />
- 2. Example 1:<br />Write the equation of the line that passes through the point (2,5) and has a slope of 3.<br />2<br />3<br />5<br />Distribute<br />Isolate “y” and combine like terms<br />
- 3. Example 2<br />Write the equation of a line that has a slope of and passes through the point (-3,1).<br />“double” signs…not good<br />2<br />1<br />-3<br />3<br />That’s better!<br />Distributive property<br />Isolate “y” and combine like terms<br />
- 4. Write the equation of a line that passes through the points (4,2) and (10, 6).<br />This time, we have to find the slope first.<br />Example 3 <br />Run=6<br />Rise=4<br />If you don’t like the slope formula, you can also graph the two points and use Rise over Run<br />
- 5. Example 3(cont)<br />Write the equation of a line that passes through the points (4,2) and (10, 6).<br />Now that we know the slope, pick one of the points and write the equation.<br />
- 6. Example 4<br />Write the equation of the line that passes through (-2,-5) and (-1,3).<br />1<br />8<br />
- 7. 1. Write the equation of the line that has a slope of -3 and passes through the point (3,6).<br />2. Write the equation of the line that passes through the points (-3,2) and (4,-1).<br />Answers:<br />1. y=-3x+15<br />2. <br />You try:<br />

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