Lecture 2

Question 1

What is an equation?

Answer 1

A mathematical statement that asserts the equality of two expression, there should be an equal sign

Question 2

What is the purpose of an equation?

Answer 2

To find the value of variables to make the statement true

Question 3

What is a function?

Answer 3

A relation between a set of inputs and a set of possible output. Often written as f(x) = expression.

Question 4

What is the purpose of a function?

Answer 4

To show how one quantity depends on another, showing how the output changes as the input does.

Question 5

inequality?

Question 6

What is a linear equation and what will it produce on a graph?

Answer 6

Sum, such as 2x + 3y + 1,consisting of first powers of the variables and a number. When graphed, a linear equation will
always produce a straight line

Question 7

What is a non-linear equation and what will it produce on a graph??

Answer 7

Sum where the highest power of the variable is greater than 1, or variables are multiplied (e.g., xy). When graphed, a linear equation will
always produce a non-straight shape.