8th Grade Math Vocabulary
Initial value, where the line crosses the y-axis, starting point
What is the y-intercept?
0.0000342 written in scientific notation.
What is 3.42 x 105?
The graph of x = 5 looks like this when graphed on a coordinate plane.
What is a vertical line?
If a line is parallel to another, it has _____ slope
...the same slope.
Longest side of a right triangle, opposite the right angles, always c.
What is the Hypotenuse?
The three steps to finding a slope-intercept form equation.
2. Find b
3. Write your equation.
Slope of y=-3/4x + 6
What is m=-3/4
If you solve an equation has infinitely many solutions, what would a solution look like?
x=x
6=6
Same on both sides
Also known as the opposite operation, used to move a term from one side of the equals sign to the other.
What are inverse operations?
Two parts:
1. When two lines are graphed on the same coordinate plane.
2. When the two lines appear to be graphed on top of one another.
What is system of equations?
What is "infinitely many solutions"?
The slope formula.
What is m = (y2 - y1)/(x2 - x1)
The process of finding the length of the height of a cylinder after being given the volume and radius of the cylinder.
What is backwards volume?
Numbers that include radicals that are NOT perfect squares...and pi
What are irrational numbers?
This type of relation maps one x value to exactly one y value.
What is a function?
Solve: -3(x+5) = 2x-5
x = -2
A 180 degree rotation of a shape graphed in Quadrant III of a coordinate plane will be mapped to this new quadrant.
What is quadrant I?
Find the slope of the line passing through the following points: (-4, 0) and (-3, -2).
What is -2.
The only type of transformation that makes the new image not congruent to the original.
What is a dilation?
The last step to get a cubed variable by itself.
What is finding the Cubed root?
Simplify the expression: (22)3 x 2-6
What is 1?
The 6 types of correlations for a scatterplot.
What is...
positive and negative
strong and weak
linear and nonlinear
(also no correlation)
Write an equation in slope intercept form that passes through point (1, 8) and has a slope of 5.
y = 5x + 3
These numbers can be used to plot irrational numbers on a number line without using a calculator