It's x, y or any symbol that represents an unknown value.
What is a variable?

What's this number in rational form?
4/sqrt(2)
What is
2sqrt(2)
25 = 3x - 5
Solve for x
x = 10
Rewrite this equation in factored form:
x^2 - 9
Solve this system of equations for x and y,
3x + 2y = 12
5x - 2y = 4
x = 2
y = 3
It's a number.... it stays the same... it never changes.
What is a constant?

Simplify this:
sqrt(121)/110
+-1/10
Solve for x.
y = -2/3x + 7/3
y = 15
x = -19
Write this expression in factored form:
x^3 - 36x
x(x + 6)(x - 6)
Solve this system of inequalities
3x + 2 ≤ 5(x − 4)
11 ≤ x
In the equation "y = x2":
*y is a variable,
*x is a variable,
and the number 2 is this thing.
What is an exponent?
Write this in simplest radical form:
(-12 +- sqrt(72))/18
(-2 +- sqrt2)/3
The function
f(x) = x^2 -5x + 3
is graphed below.
What is x when f(x) = -1?

x = 1 and x = 4
Write the slope-intercept form equation for a line that passes through the points
(-2, 4) and (4, 16)
y = 2x + 8
What is the solution of the following system of equations?
2a + 3b = 12
a = 1/2b - 6
a = -3
b = 6
I can use this formula below to solve these type of equations written in a standard form.
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What is a quadratic equation?
Rewrite this expression by factoring completely:
x^3 - 36x
x(x + 6)(x - 6)
0 = ax^2 + bx + c
Solve for x.
x = (-b +- sqrt((b)^2 - 4ac))/(2a)
Rewrite this in standard form:
2(x - 3)^2 + 4
2x^2 - 12x + 22
A system of inequalities is graphed on the set of axes below. Name a point that is a solution to this system

Any point within the dual shaded area.
This expression isn't an equation. What is it called?
y > x + 1
What is an inequality?

1/3p = x2
m + 3r = 5x + 16
2 + r = 5
Write p + m in terms of x?
3x^2+5x + 7
Solve for x
5x^2+4x - 11 = 10
x = .2 and x = -1
Determine the product of
(2x + 3)
and
(-6x^2 + 5x + 1)
Express the product in standard form.
-12x^3 -8x^2 + 17x + 3
Solve the following system of equations algebraically for all values of x and y.
y = x^2 + 9x + 4
y - 2x = -6
The coordinates are
(-5, -16)
and
(-2, -10)