Finding Domain and Range of Linear Functions

What is the first step in graphing a line in y-intercept form?

• Plotting the slope

• Plotting the y-intercept

• Drawing the x-axis

• Finding the domain

How do you determine if a line is a function using a graph?

• By using the vertical line test

• By checking if it crosses the x-axis

• By checking if it crosses the y-axis

• By using the horizontal line test

What does it mean if a vertical line crosses a graph more than once?

• The graph is linear

• The graph is a function

• The graph is quadratic

• The graph is not a function

What is the domain of the green line?

• Only integers

• All real numbers

• All negative numbers

• All positive numbers

What is the range of the green line?

• All negative numbers

• All real numbers

• Only integers

• All positive numbers

What is the y-intercept of the blue line?

• 1

• 0

• -1

• 2

What is the slope of the blue line?

• -2

• 2

• -1/2

• 1/2

How do you graph the blue line after plotting the y-intercept?

• Go up 1 and right 2

• Go down 1 and left 2

• Go down 1 and right 2

• Go up 1 and left 2

What is the domain of the blue line?

• Only integers

• All real numbers

• All negative numbers

• All positive numbers

What is the range of the blue line?

• All positive numbers

• All negative numbers

• Only integers

• All real numbers