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Think Math Speak Math

Terms in this set (38)

boundary line:
graphed linear function separating solutions from non-solutions
causation:
action of causing something or one thing causes another
consistent:
at least one ordered pair as solution for both
constant of variation:
slope of direct variation equation represented by k
coordinate:
group of numbers used to indicate position on line or plane
correlation:
a statistical way to measure the relationship between two sets of data; both sets are observed at the same time
correlation coefficient:
strength and direction of scatter plot
dependent:
infinitely many solutions in a system of equations
direct variation:
y directly varies with x at a constant rate, k
distributive property:
number outside the parenthesis multiplied to each number or variable inside the parenthesis
domain:
set of all input values (x-coordinate)
function:
every input value (x-coordinate) has one and only one output value (y-coordinate)
graph
a diagram or chart that shows a relationship between two or more variables
horizontal line
straight line where all coordinates have the same y-coordinate
inconsistent
no ordered pair as solution for both
independent:
exactly one solution
input/output rule
linear equation where x is the input and y is the output
intercepts
points on graph where crosses x and y axis
literal equation:
equation consisting of multiple variables and numbers
opposite reciprocal
flip the numerator with denominator and use opposite sign
outlier
a point that does not fit with the rest of the data
parallel lines
two or more lines never intersect; have same slope
perpendicular lines
lines that intersect forming 90 degree angle; opposite reciprocal slopes
point-slope form
y - y1 = m(x - x1)
quadratic function
involving the second and no higher power of an unknown quantity or variable (equation has second power ONLY)
range
set of all values dealing with y
relation
set of ordered pairs; shown as a graph, table, ordered pairs or mapping
scatter plot
relationship between sets of data
slope
to diverge from the vertical or horizontal incline; steepness
slope formula
m = (y2 - y1)/(x2 - x1)
slope-intercept form
y = mx + b; m is slope, b is y-intercept, x and y are coordinates to any point
solid line
points on line are included in solution of linear inequality; < or >
standard form
Ax + By = C, where A, B, and C are just numbers
system of equations
set of equations with same variables
vertical line test
a graph is a function if and only if a vertical line does not pass through more than one point on the graph at any given point
x-intercept
point where the line passes through the x-axis
y-intercept
point on a graph that crosses the y-axis
zero property
any number multiplied by 0 = 0.
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