Solving Equations
2x-4=12
x=8
a) x= 2 is a _____ line and passes through the ____ axis
b) y= -5 is a _____ line and passes through the ____ axis
a) vertical line and passes through the x-axis
b) horizontal line and passes through the y- axis
Type 800 words in 12 minutes
________ words per minute
67 words per minute
Identify the slope and y-intercept
y= -3/5x + 8
m= -3/5 and yint= 8
Find the x-and y-intercepts
5x - 2y = 20
The x-intercept is (4, 0)
The y-intercept is (0, -10)
Determine if x=7 is a solution to: 3x+2x-30=5
Yes
You can quickly identify what with the slope-intercept form.
slope and y-int
8 ducks for $23.60
$________ per duck
$2.95 per duck
2x-4=12
x= 8
Find the equation of the line in slope-intercept form
(y = mx + b) that has a slope of m = 5/2 and passes through the point (0, -3).
y = 5/2x - 3
15x - 6x + 22 = 58
x = 4
Convert from Standard Form AX + BY = C to Slope-Intercept Form.
y= mx+b
What is a better buy?
12 bars of soap for $10.00 or 5 bars of soap for $4.00.
12 bars for $10= About 83¢ per bar
5 bars for $4= About 0.80¢ per bar
80¢ per bar
Since 80¢ per bar is cheaper, the 5 bars of soap for $4.00 is the better buy.
Find the x- and y-intercepts for the line 2x+5y=10
x- int (5,0) y-int (0,2)
Find the equation of the line in slope-intercept form
y = mx + b, that has a slope of m = -3/4 and passes through the point (8, 2).
Plug them into the Point-Slope Formula:
y - y1 = m (x - x1)
y = -3/4x + 8
2x+1=4x-5
3
What is true about the slopes of two lines that are PARALLEL?
They have the SAME (=) slopes
A pack of 12 soda cans costs $5.40. How much would it cost to buy 30 cans at the same rate?
$13.50 for 30 soda cans
Convert from Standard Form to Slope-Intercept Form
3x + 2y = 12
y = -3/2x + 6
Convert from point-slope to slope-intercept form, then Graph
y+3= 2/3 (x+6)
y= 2/3x + 1
x+10/5 = x/3
x=15
What is true about perpendicular lines? Give an example for an extra 100 points.
Perpendicular lines have slopes that are opposite reciprocals of each other.
A car can travel 165 miles on 5 gallons of gasoline. How many gallons of gasoline will the car need to travel 429 miles?
$13/ gallons
Graph the following
y= -4/3x -5
Start at -5 on your y-int, then follow the slope to go down 4 and right 3.
Find the equation of the line in slope-intercept form
(y = mx + b) that has a slope of m = -1/2 and passes through the point (-6, 7).
y = -1/2x + 4