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8th Grade Math Vocabulary

Terms

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Constant
in a polynomial, a term that does not contain a variable is a constant
Slope
the slant of a line that describes steepness.
Hypotenuse
in a right triangle, it is the longest side which is opposite the right angle
Rational number
any number written as a quotient of two integers where the denominator is not zero.
Formula
an equation that shows the relationship between two or more quantities
Domain
the set of the first coordinates
X-Y Intercepts
the x and y-coordinates of the point where a line crosses the x or y-axis.
Scientific notation
the first function is greater than or equal to 1 and less than 10, and the second factor is a power of 10
Adjacent angles
angles that share a vertex and a side but have no interior points in common.
Range of a function
all y values are out put variables
Linear equation
an equation where all of its solutions lie on a line
Scatter plot
a graph that displays two sets of data as ordered pairs
Pyramids
a solid with triangular faces that meet at a vertex
Term
a number, a variable, or the product of a number and a variable
Pythagorean Theorem
in any right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse
Cones
figure that has exactly one circular base and one vertex
Legs of a right triangle
the two sides that form the right angle
Surface area
the sum of the areas of its surface
Prism
a solid with two parallel and congruent polygonal faces called bases. A prism is named for the shape of its base
Standard form
a number written using digits and place value is in standard form
Coefficient
the numerical factor in any term of polynomial
Linear inequality
an inequality that can be written y < >
Cylinder
a figure that has two bases that are parallel
Slope intercept form
an equation written in the form y=mx+b is in slope-intercept form. The graph is a line with slope m and y-intercept b.
Distance formula
D=RT
Lateral area
the sum of the areas of the lateral surfaces of a solid.
Solids
three dimensional figures are objects that do not lie in a plane. They have length width and height

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