Lesson 3-4 Equations of Lines
Lesson 3-4
Equations of Lines
Ohio Content Standards:
Ohio Content Standards:
Recognize and apply angle relationships in situations involving
intersecting lines, perpendicular lines and parallel lines.
Ohio Content Standards:
Solve and graph linear equations and inequalities.
Ohio Content Standards:
Write and use equivalent forms of equations and inequalities in problem
situations; e.g., changing a linear equation to the slope-intercept form.
Ohio Content Standards:
Describe and interpret rates of change from graphical and numerical data.
Ohio Content Standards:
Recognize and explain that the slopes of parallel lines are equal and the slopes of perpendicular lines are
negative reciprocals.
Slope-Intercept Form
Slope-Intercept Form
y = mx + b, where m is the slope of the line
and b is the y-intercept.
Point-Slope Form
Point-Slope Form
y – y1 = m (x – x1),
where (x1, y1) are the coordinates of any point on the line and m is
the slope of the line.
Write an equation in slope-intercept form of the line with
slope of 6 and y-intercept of -3.
Write an equation in point-slope form of the line whose slope is -
3/5 that contains (-10, 8).
Write an equation in slope-intercept form for a line
containing (4, 9) and (-2, 0).
Write an equation in slope-intercept form for a line containing (1, 7) that is perpendicular to the line
y = -1/2 x + 1.
An apartment complex charges $525 per month plus a $750
security deposit.
An apartment complex charges $525 per month plus a $750
security deposit.
Write an equation to represent the total annual cost A for
r months of rent.
Assignment:Assignment:
Pgs. 148-150 Pgs. 148-150 16-42 evens, 16-42 evens, 56-70 evens56-70 evens