A symbol for a number you do not know the value of.
What is a variable?
This is the y-intercept of the function y = -2x - 3.
What is -3?
This is the value of x in the following equation:
2/3 x + 3 = 9
What is 9?
This table represents a non-linear function.

What is table 3?
A number by itself with no variable.
What is a constant?
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What is 5/2?
This is the value of x in the following equation:
2(x + 3) + 3(x - 4) = 14
What is 4?
This is the equation of a line.
What is y = mx + b?
A number used to multiply a variable.
What is a coefficient?

What is y = 3x + 1?
This is the value of x in the following equation:
1/2 + 1/6 x = -2 + x
What is 3?
This is the rate of change of a vertical line.
What is unidentified, or no slope?
This is how the pattern of a linear function is moving or changing.
What is slope, or rate of change?
This is the rate of change for the line that intersects the points (1, 2) and (3, -8).
What is -5?
This is the value of x in the following equation:
What is 4?
This is the rate of change of a horizontal line.
What is zero?