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Linear equation
Is an equation in which the highest power of the variable is always 1. It is also known as a one degree equation
slope of a line
Is the steepness of the line.
three kinds of system of linear equations in two variables according to the number of solutions
system of consistent and dependent equations, system of consisted and independent equations,
system of consistent and dependent equations
is a system of linear equations having infinity many solutions slope the lines defined by the equation are equal
system of consisted and independent equations
ordered pair (x,y)
is a solution of linear inequality in two variables in two variables if the inequality is true when the values of x and y are substituted into the inequality
independent variable
is the factor in an experiment that the researcher intentionally manipulates or changes to observe its effect
dependent variable
is what the researcher measures to see if it changes as a result of the manipulation of the independent variable.
conditional statement (also called an if-then statement)
hypothesis followed by a conclusion.
an if-then statement is composed of two clauses
if clause (a), then clause (b)
if p then q
the p statement is called hypothesis and the q statement is called conclusion
if p and q is true then
it is true
if p is true and q is false then
it is false
if p is false and q is true then
it is true
if p and q are false then
it is false