September 08, 2016
Happy Thursday
9/8/16
Point Slope
WARM-UP:
How would you calculate the slope of two points with
coordinates (a, b) and (c, d)?
September 08, 2016
The slope formula is: m = y2 - y1
x2 - x1
From that we get the point-slope form of a line.
September 08, 2016
y - 3 = 2(x + 1)
Identify the slope:
Graph the equation.
Identify the point:
September 08, 2016
y + 4 = -3(x - 5)
Identify the slope:
Graph the equation.
Identify the point:
September 08, 2016
Given: slope = 3, (-2, 5)
Write the equation in point-slope form.
Graph the equation.
September 08, 2016
Given: m = -3/4, (2, 5)
Write the equation in point-slope form.
Graph the equation.
September 08, 2016
Given: (0, 3) and (-2, -1)
Write the equation in point-slope form.
September 08, 2016
Given: (-2, 6) and (5, 6)
Write the equation in point-slope form.
September 08, 2016
September 08, 2016
Given: (4, 0)
Write the equation in point-slope form that is
perpendicular to y = -3x + 2.
September 08, 2016
Given: (5, 9)
Write the equation in point-slope form that is
parallel to y = 8x + 7
September 08, 2016
Assignment: Writetheequationofalineinpoint-slope
formwiththegiveninformation.Thengraphtheline.
p.202#20-30even,37-40.
Thengraphp.203#48,49andindicatewhetherthelinesare
parallelorperpendicular.Provideevidencetodefendyour
answer.
September 08, 2016