Show:
Writing Equations in Slope Intercept Form
Writing Equations in Standard Form
Writing Equations in Point Slope Form
Graphing Linear Equations
Miscellaneous
100
(1, -3) slope = -2
y = -2x - 1
100
Slope = 5/4, y intercept = 0
5x - 4y = 0
100
(4, 2) slope = 1/4
y - 2 = 1/4(x - 4)
100
Graph y = 3x - 2
Y intercept = -2 and Slope = 3
100
Is the following a direct variation? x - 3y = 0
Yes
200
slope = 9/4, (0, 5)
y = (9/4)x + 5
200
(1, -1) slope = 3/4
3x - 4y = 7
200
slope = 9/2, y intercept = -4
y + 4 = 9/2(x - 0)
200
Graph 4x + 5y = 12
x intercept = 3, y intercept = 2.4
200
Write the direct variation equation that relates x = 3 and y = 9.
y = 3x
300
(3, 2) (5, -1)
y = -3/2x + 13/2
300
(0, -1) (1, 5)
6x - y = 1
300
(-2, -5) (0, 3)
y + 5 = 4(x+2) y - 3 = 4(x - 0)
300
Graph 3x - 9y = 9
x intercept = 3, y intercept = -1
300
Evaluate f(7) when f(x) = -7x.
-49
400
Write the equation for the line that goes through (-5, -4) and runs parallel to y = -1/5x + 2.
y = -1/5x - 5
400
Write the equation to the line that goes through (5, 1) and parallel to y = -4/5x - 1.
4x + 5y = 25
400
Write the equation for the line that goes through (-5, -5) and is parallel to y = 7/5x - 2.
y + 5 = 7/5 (x + 5)
400
Graph y - 2 = 6(x + 3)
Point (-3, 2), slope = 6
400
Find the value of x so that f(x) = 3 when f(x) = 6x + 9.
-1
500
What is the equation for the line perpendicular to y = -x that goes through (3, 4)?
y = x + 1
500
Write the equation for the line that goes through (-5, -4) that is perpendicular to y = -5/4x + 5.
4x - 5y = 0
500
Write the equation for the line that is perpendicular to y = - 2x + 4 and goes through the point (2, -1).
y + 1 = 1/2 (x - 2)
500
Graph y + 1 = -1/2 (x - 4)
Point: (4, -1), slope = -1/2
500
Find the equation of the best fit line, rounded to the nearest tenth. Then find the value of y when x = 10. (0, 20) (1, 32) (2, 39) (3, 53) (4, 63)
y = 10.7x + 20, 127