Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Writing the equations of lines(point slope form)

1,627 views

Published on

  • Be the first to comment

Writing the equations of lines(point slope form)

  1. 1. Writing the equations of lines<br />Point-slope form<br />
  2. 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. 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. 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. 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. 6. Example 4<br />Write the equation of the line that passes through (-2,-5) and (-1,3).<br />1<br />8<br />
  7. 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 />

×