Warm Up 10/11/18 1. Write the equation 2. Write the equation of of the line that passes the line that passes through through (-3, 4) with a (2,5) and (0,-4) slope of 2.

Writing Equations in Point-Slope Form Ch. 4-3 Writing Equations in Point-Slope Form

Point-Slope Form y – y1 = m ( x - x1 )

ӿ Practice 1) Write an equation in point-slope form for the line that passes through (3, -2) with a slope of 2, and then convert to slope-intercept form. Step 1: Write the point slope form Step 2: Plug in m, x1 and y1 into the equation. Step 3: Solve for y 𝒚− −𝟐 =𝟐 (𝒙−𝟑) -Distribute 𝟐 inside () - Subtract 2 from both sides to isolate y. y – y1 = m ( x - x1 )

YOU TRY!! 2) Write an equation in point-slope form for the line that passes through (-2, 1) with a slope of -6 and convert to slope-intercept form.

YOU TRY!! 2) Write an equation in point-slope form for the line that passes through (-2, 1) with a slope of -6 and convert to slope-intercept form.

Practice!! 3) Write in slope-intercept form an equation of the line that passes through the points (2,4) and (5,-2) First Step: Find the slope M= 𝒚𝟐−𝒚𝟏 𝒙𝟐−𝒙𝟏 Second Step: Identify x1, y1, and Slope (m) x1= y1= m= Third Step: Plug x1, y1, and m into point slope form and solve for y. y – y1 = m ( x - x1 )

YOU TRY!! 4) Write an equation in point-slope form for the line that passes through the points (-4, 9) and (-5,8) and convert to slope-intercept form.

YOU TRY!! 4) Write an equation in point-slope form for the line that passes through the points (-4, 9) and (-5,8) and convert to slope-intercept form.