Math ยท Vocabulary
Math Vocabulary Grade 8
Key grade 8 words for functions, the number system, the Pythagorean theorem and transformations.
- ๐ Grade 8
- ๐งฎ Math
- โ 25 questions
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slope
The steepness of a line: rise over run
y-intercept
The point where a line crosses the y-axis
function
A rule that gives exactly one output for each input
linear
Describes a relationship whose graph is a straight line
nonlinear
Describes a relationship whose graph is not a straight line
input
A value put into a function, usually x
output
The value a function gives back, usually y
hypotenuse
The longest side of a right triangle, opposite the right angle
legs
The two sides of a right triangle that form the right angle
irrational
Describes a number that cannot be written as a fraction of integers
rational
Describes a number that can be written as a fraction of integers
square root
A number that multiplied by itself gives the original number
cube root
A number that used as a factor three times gives the original number
exponent
Tells how many times the base is used as a factor
system
Two or more equations with the same variables
translation
A slide of a figure without turning or flipping it
reflection
A flip of a figure over a line
rotation
A turn of a figure around a fixed point
dilation
A transformation that enlarges or shrinks a figure by a scale factor
congruent
Same shape and same size
similar
Same shape but possibly a different size
transversal
A line that crosses two or more other lines
cylinder
A solid with two parallel circular bases joined by a curved surface
sphere
A solid where every point on the surface is the same distance from the center
scatter plot
A graph of paired data points used to look for a pattern
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