8th Grade Graphing
Which axis runs horizontally?
X-axis
How do you find the slope of a line
Rise/run
3(n)=15
N=5
How many answers does this equation have?
2x + 3 = 2x + 3
infinite
put this number into scientific notation.
1,530
1.5 x 103
An order pair identify what two values?
(x-value, y-value)
The slope of the line with the points (0,4) and (0,6)
Undefined
Solve for x;
2x + 4 + 8x + 2 = 26
x=2
How many answers does this equation have?
2x + 5 = x + 8
one
x = 3
Put this number into standard notation.
2.53 x 102
253
Which is the equation of a vertical line?
x=
This type of slope has no run it only has a rise
Zero Slope
What is 33
3 x 3 x 3= 27
How many answers does this equation have?
2x + 8 = 2x + 22
0
Multiply.
(2 x 103) (9 x 104)
18 x 107
BONUS: 1.8 x 108
Find the slope of the equation. y= 3x + 2
slope = 3/1
This type of slope will have a line go up
Positive slope
Negative
How many answers does this equation have?
x2 + 7 = 42
2
Divide.
6 x 103 / 2 x 105
3 x 10-2
In order to graph a line you need to know...
Slope & y-intercept
Write the equation for slope-intercept form
y=m(x)+b
1342 - 456
886
How many answers does this equation have?
2x + 32 + 5 = x + 3x + 3
1
x = 17
Add.
4.3 x 105 + 2.6 x 104
4.56 x 105