Writing equations in slope intercept form
Writing equations in point-slope
Writing equations of parallel lines
Writing equations of perpendicular lines
Interpreting a picture
100
The formula for slope-intercept form
What is y = mx + b
100
The equation for Point-slope form
What is
y - y_1 = m(x-x_1)
100
The slope of a line which is parallel to
y = -2x+8.
What is -2?
100
The slope of the line which is perpendicular to
y = -2x + 1.
What is
1/2?
100
This line has a the lowest y-intercept. (b) .
What is the black line?
200
The "m" in the slope intercept formula
What is the slope?
200
True or false: There is only one point-slope formula for each line.
False: There are infinitely many points on a line, and you could use any of them in the formula.
200
The slope of a line parallel to y=5x+1
What is 5
200
The slope-intercept equation of the line perpendicular to
y = x/3 + 2
and goes through (7,6)
What is y= -3x+27
200
This line has the steepest slope (m) .
What is the red line?
300
The "b" in the slope-intercept formula
What is the y-intercept?
300
Point and slope of
y-4 = 5(x+8)
What is
(-8, 4) m=5
300
The point-slope equation of the line parallel to x+4y=6 and through point (-3,2)
What is y-2= (-1/4)(x+3)
300
The point-slope equation of the line perpendicular to
y+4=6(x-1)
goes through (-2,5).
What is
y-5 =(-1/6)(x+2)?
300
For this line b=0 .
What is the blue line?
400
'Rise over run' refers to this property of a line.
What is the slope?
400
Equation of a line in point slope form
(2,-7) m= -8
What is y+7 = -8(x-2)
400
x=5 and x=7
Are always.....
What are parallel lines.
400
The slope of a line perpendicular to the horizontal line
y=7.
What is 'undefined'?
400
For this line m=0 .
What is the black line?
500
You calculate the slope (m) using this equation
What is
m = (y_2-y_1)/(x_2-x_1)
500
Equation of a line in point slope form going through the two points.
(2,5) and (-1,4)
What is
y-5 = (1/3) (x-2)
or
y- 4 = (1/3) (x+1)
500
A line parallel to 5y=2x+7 going through (5,-2)
What is
y= (2/5)x - 4
500
The line perpendicular to
y=8
which passes through the point (3,-3).
What is x=3 ?
500
For this line m is a negative number.
What is the green line?