Finding Slope of a Line
Direct Variation
Slope-Intercept Form
RANDOM ?'s
Point Slope
100
Identify the slope 
2
100
Suppose y varies directly with x. Explain how the value of y changes when the value of x is doubled.
The value of y is doubled.
100
What is slope intercept form?
y = mx + b
100
Which statement about this equation is false: y=12x is linear, direct variation, doesn't pass through the origin, has a solution of (0.5,6)
Doesn't pass through the origin
100
y-4=-1/3(x+5)
200
Identify the slope of the following equation.
y = 2x + 3
slope is 2
200
Is this a direct variation equation: y+8= -x
No
200
In the following linear equation, what is the y-intercept?
y = -3/4x
0
200
Write an equation for a vertical line through the point (-3, 3)
x = -3
200
Just do 14 only
y-1=2(x-3)
300
Name three ways to describe slope.
Possible answers: rate of change
rise over run
y2 - y1/x2 - x1
slope = m in y = mx + b
300
Is this a direct variation equation: -10x=5y
And if so, what is the constant of variation?
Yes, -2
300
Rewrite this equation in slope-intercept form.
x + y = -12
y = -x - 12
300
What is the slope of this equation?
x = 5
Undefined Slope
300
Write an equation for a line with the following slope and points.
m = 2/3 and (0, -2), (3, 0)
y = 2/3x - 2
400
Find the slope of the line that includes the following points.
(4, -5) (-4, 5)
-10/8 which simplifies to -5/4
400
Write a direct variation equation that relates x and y. y=-6 and x=2
y=-3x
400
Rewrite the following equation in slope-intercept form.
3x + 6y = -18
y = -1/2x - 3
400
Graph the following equation. 8x + 4y = 16
Should be rewritten as y = -2x + 4 and then graphed.
400
Write a point slope equation for a line with one of the following two points.(15, -10) (5, 10)
y-10=-2(x-5) or
y+10=-2(x-15)
500
Find the slope of the line that includes the following points.
(-12, -9) (-3, -3)
-6/-9 = 6/9 = 2/3
500
Is the parent linear function a direct variation? Give 2 reasons why or why not.
Yes, it has a constant rate of change and goes through the origin.
500
Write an equation in slope-intercept form of the line that passes through the given points: (-1,3) and (2,6)
y=x+4
500
Which equations slope is the steepest?
y=-2x
y-2=5(x-2)
y=-1/2x+12
y=10
y-2=5(x-2)
500
y=3x+55