Math semester 1 test

Question 1

Linear inequality

Answer 1

Treat “ < “ or “ > “ as “=” signs

Similar to linear equations

When dividing by negative number during process. Flip the “<” signs.

Question 2

Double inequality

Answer 2

When 2 Linear equalities are added together.

Question 3

Functions & Relations

Answer 3

• Function: One input results in one output
• Relation: One input into many outputs

Question 4

Verticle line test

Category: Functions & Relations

Answer 4

• Function: Each input (x value) has only one output (y value)
• Relation: Each input x value) has multiple outputs (y value)

Question 5

Define the term

Domain

Category: Functions & Relations

Answer 5

The inputs of a function/relation

Question 6

Define the term

Range

Category: Functions & Relations

Answer 6

Given the inputs, what the outputs it can produce

Question 7

Composite functions

Category: Functions & Relations

Answer 7

Equation: F(g(x))

So you know that shit where f(2), you replace all the “x” in the equation with the number in the bracket? yea, same shit.

Question 8

Describe the equation

Midpoint formula

Category: Coordinate geometry

Answer 8

M=(x1+x2/2, y1+y2/2)

M=midpoint

Question 9

Distance formula

Answer 9

D=√(x2-x1)^2+(y2-y1)^2

Question 10

Standard equation of circle

Answer 10

(x-h)^2+(y-k)^2=R^2

C (h, k)=midpoint
R=Radius