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Module 4 topic 3 notes

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Module 4 Topic 3 Writing Linear Equations
The equation for slope-intercept form is m is the slopeslope measures the steepness of the linem=-4/2=-2 b is the y-interceptb is where the line crosses the y-axis. Writing Linear Equations 2 -4
Write the equation of the line that has a slope of -4 and y-intercept of 5. Writing Linear Equations
Writing Linear Equations We use Point-Slope form, when we are given: a point and a slope!
Point Slope Form Write the equation of the line that passes through (-3,5) and has a slope of 2. What are we given? We are given the slope is 2! AND…we are given a point (-3,5). Final Answer
Point Slope Form Write the equation of the line that passes through (-3,5) and (-1,9) . Can we find the slope? Do we have enough info? What are we given? We are given 2 points, but no slope! Yes, we can use…
Point Slope Form Write the equation of the line that passes through (-3,5) and (-1,9) . Now that we know that the slope is 2, we can use either point to find the equation of the line.
Writing Linear Functions Summary When given the slope and y-intercept: y=mx+b. When given 1 point and the slope, do point slope: y – y1=m(x-x1). When given 2 points, and no slope, one must find the slope(m=y2-y1over x2-x1), then use either point for the point slope form. Now proceed to Mastery Assignments!

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Module 4 topic 3 notes

  • 1. Module 4 Topic 3 Writing Linear Equations
  • 2. The equation for slope-intercept form is m is the slopeslope measures the steepness of the linem=-4/2=-2 b is the y-interceptb is where the line crosses the y-axis. Writing Linear Equations 2 -4
  • 3. Write the equation of the line that has a slope of -4 and y-intercept of 5. Writing Linear Equations
  • 4. Writing Linear Equations We use Point-Slope form, when we are given: a point and a slope!
  • 5. Point Slope Form Write the equation of the line that passes through (-3,5) and has a slope of 2. What are we given? We are given the slope is 2! AND…we are given a point (-3,5). Final Answer
  • 6. Point Slope Form Write the equation of the line that passes through (-3,5) and (-1,9) . Can we find the slope? Do we have enough info? What are we given? We are given 2 points, but no slope! Yes, we can use…
  • 7. Point Slope Form Write the equation of the line that passes through (-3,5) and (-1,9) . Now that we know that the slope is 2, we can use either point to find the equation of the line.
  • 8. Writing Linear Functions Summary When given the slope and y-intercept: y=mx+b. When given 1 point and the slope, do point slope: y – y1=m(x-x1). When given 2 points, and no slope, one must find the slope(m=y2-y1over x2-x1), then use either point for the point slope form. Now proceed to Mastery Assignments!