Equations & Inequalities
Solve: x+7=12
x=5
what is the formula for the area of a triangle
Area = 1/2 * base * height
Is this a function?
{(1,2),(2,3),(1,4)}
No. Input has two different output
30/5 = 6
rational
Solve: 3x = 18
x = 6
Find the volume of a cube with a side of length 4cm
64 cm3
What does a function rule do?
Assigns each input to exactly one output
What does the median measure?
the middle number in a data set
true or false: all integers are rational numbers
true
Solve: 2x - 5 = 3x + 1
x = -6
The sum of the angles in a triangle is always ____ degrees?
180
Identify the independent variable in the equation: y = 2x+5
x
a spinner has 4 equal sections: red, blue, green, and yellow. Whats the probability of landing on red?
1/4
Approximate √10 to the nearest tenth.
3.2
Solve: -2(x-3) = 4
x = 1
what is the pythagorean theorem
a2+b2=c2
Is the relation y = x2 linear or nonlinear
Nonlinear. Linear relations are written in the form y = mx+b
A bag contains 3 red marbles, 2 blue marbles, and 5 green marbles. What is the probability of randomly selecting a blue marble?
2/10 = 1/5
is π (pi) rational or irrational?
irrational
Graph the solution x < -1 on a number line
open circle at -1, shading to the left
A right triangle has legs of 6cm and 8cm. Find the hypotenuse
c = 10cm
Can the graph of a function have more than one y-value for the same x-value?
NO
A number is randomly chosen from 1 to 20. What is the probability that the number is a multiple of 4?
5/20 = 1/4
What are the 5 groups used to classify real numbers
Natural, whole, integer, rational, irrational