Linear Equations, Tables and Graphs from YouTube

For the linear function y = x, what is the relationship between the input (x) and the output (y)?

• The output (y) is always double the input (x).

• The output (y) is always half the input (x).

• The output (y) is exactly the same as the input (x).

• The output (y) is always the negative of the input (x).

Another word for 'gradient' is ​ (a)  

• slope
• y intercept
• x intercept

In the linear function y = mx, what does the variable 'm' represent?

• The y-intercept of the line.

• The x-intercept of the line.

• The slope of the line.

• The length of the line.

What is the slope of a perfectly horizontal line?

• Undefined

• 0

• 1

• -1

What does the variable 'b' represent in the equation y = mx + b?

• The slope of the line.

• The x-intercept of the line.

• The y-intercept of the line.

• The origin of the graph.

What is a key characteristic of a linear function's variables (x and y)?

• They must always be positive.

• They can be raised to any power.

• They can only contain first-order variables (raised to the power of 1).

• They must always be integers.

x = 8 has a slope that is (a)  

• infinite
• positive
• negative
• zero

y = 5x - 3 has a slope that is (a)  

• positive
• negative
• infinite
• zero

y = -2x + 9 has a slope that is (a)  

• negative
• positive
• infinite
• zero

y = 4 has a slope that is (a)  

• zero
• positive
• negative
• infinite