Exponents
How do you write 5-4 with a positive exponent?
1/ 54
√49
7
Solve 8+3x = 5x+2
x=3
What are the THREE types of solutions an equation can have?
No solution
Infinite solutions
One solution
What are the FOUR inequality symbols?
greater than, less than, greater than or equal to, less than or equal to
How do you find the slope of a line?
Rise/run
Simplify x3 * x4
x7
√169
13
Solve 6n - 1 = 4n - 5
n = -2
How many solutions are in
6(x-3) + 10 = 2(3x - 4)
-8 = -8 which means infinite solutions
When graphing inequalities, when do you use a closed or open dot?
open - with greater than or equal to, less than or equal to
closed - greater than, less than
What is slope-intercept form?
y = mx + b
Simplify c-4 * c2
c-2 or 1/c2
Solve y2 = 144
12
2.3x + 2.8 = -1.2x + 9.8
x = 2
How many solutions?
8(4 - 2x) = 4(3 - 5x) + 4x
32 = 12 which means no solution
solve and graph
-2x + 6 > 12
14 > 12
What is the slope of y=7x+12
7
a5 * a-3 * b-9 * c8 * c-3
a2 * b-9 * c5 or a2*c5/b9
Is √3 a rational or irrational number? Why?
irrational. Because it is a decimal that doesn't repeat or terminate(stop).
3(8x + 12) - 15x = 2(3 - 3x)
x = -2
if at the end of an equation I get a = 12, how many solutions are there?
1
When do you have to flip the sign of the inequality?
How do you graph y = 3?
a horizontal line across 3 on the y-axis
(4d0e5f-2)4
44d0e20f-8
Which of these sets does √81 belong?
A. Rational
B. Irrational
C. Integer
D. Whole
E. Natural
Rational, Integer, Whole, Natural
0.3(10 - 5x) = 31.5 - (8x + 9)
x = 3
At the end of an equation I get 8 = 12, how many solutions are there?
none
solve 34 + 2g < 61
g < 61
what is a y-intercept?
where the line intersects the y-axis. the b in y=mx+b