8th Grade Math
Solve: 31 + 7a = 10
a = -3
How do you "undo" a squared variable?
square root
Slope intercept form
y=mxtb
The distance from zero on a number line.
What is absolute value?
Solve: 6 = 4y - 10
y = 4
y-intercept
Initial value, where the line crosses the y-axis, starting point
If a line is parallel to another, it has _____ slope
...the same slope.
Solve: 4 + 2c = 8 + 4c
c = -2
Hypotenuse
Longest side of a right triangle, opposite the right angles
Slope of y=-3/4x + 6
What is m=-3/4
Find the length of the hypotenuse of a right triangle with the following leg measures:
a = 4cm
b = 3 cm
What is 5cm?
Solve: 14 = 2(3d - 14)
d = 7
x2 = 121
What is positive and negative 11?
Equation for slope
What is m = (y2 - y1)/(x2 - x1)
Write an equation in slope intercept form that passes through point (1, 8) and has a slope of 5.
y=5x+3
Numbers that include radicals that are NOT perfect squares...and pi
What are irrational numbers?
Solve: -3(x+5) = 2x-5
x = -2
Rational number
What is a number that can be expressed as a ratio, a/b, where b is not 0.
Is it a positive or negative slope?
What is -1/2; negative.
Find the slope of the line passing through the following points: (-4, 0) and (-3, -2).
What is -2.
The only number in the English language that is spelled with same number of letters as the number itself...
What is 4 (four)?