Equation of a Line (2)

What is the equation of this line?

• x = -4

• y = -x

• y = -4

• x = 4

Answer explanation

This is a vertical line which is parallel to the y-axis.

The gradient is undefined

What is the gradient of the line y = 5x + 2

• m = 2

• m = -5

• m = 5

• m = -2

What is the equation of the line that has a gradient of -3 and cuts the y-axis at (0,2)

• y = 3x + 2

• y = 2x - 3

• y = -3x - 2

• y = -3x + 2

In the general equation y = mx + c.

What does the m stand for?

• the y-intercept

• Where the line cuts the x-axis

• The gradient of the line

Which of the following lines represents the line y = 2x + 1 ?

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• 
• 
• 

What is the equation of the straight line that has a gradient of 2 and passes through the origin?

• y = 2x

• y = 2x + 1

• y = -2x + 1

• y = -2x

Which of the following lines is y = x?

• 
• 
• 
• 

What is the equation of the line which cuts the y-axis at (0, -2) and has a gradient of 5?

• y = 5x - 2

• y = -2x + 5

• y = -2x - 5

• y = 2x + 5

Where does the line y = -3x cut the y-axis?

• (-3, 0)

• (0, -3)

• The origin (0,0)

• (0, 3)

What is the equation of this line?

• y = -2

• x = 3

• y = 3

• x = - 3

Answer explanation

This line is parallel to the x-axis and is a horizontal line.

The gradient is zero