GCSE Maths - Plotting a Line by Finding Where it Crosses the Axes #71

The video tutorial explains how to plot a straight line on a graph by finding the X and Y intercepts. It provides examples using the equations y = 2X - 4 and y = -1/2X + 3, demonstrating how to substitute values to find intercepts and draw the line. The method simplifies the process by eliminating terms when substituting zero, making the equation easier to rearrange.

What is the first step in plotting a straight line on a graph?

• Find the slope of the line

• Identify the points where the line crosses the axes

• Determine the length of the line

• Calculate the midpoint of the line

How do you find the Y-intercept of a line given the equation y = 2X - 4?

• Set Y to 1 and solve for X

• Set X to 0 and solve for Y

• Set Y to 0 and solve for X

• Set X to 1 and solve for Y

What is the X-intercept of the line y = 2X - 4?

• (4, 0)

• (0, -4)

• (2, 0)

• (0, 2)

In the equation y = -1/2X + 3, what is the Y-intercept?

• (0, -3)

• (1, 3)

• (3, 0)

• (0, 3)

What is the X-intercept of the line y = -1/2X + 3?

• (0, -6)

• (0, 6)

• (3, 0)

• (6, 0)