GCSE Maths - How to Find the Equation of a Straight Line (y = mx + c) #68

The video tutorial explains how to derive the equation of a line from a graph using the formula Y = MX + C, where M is the gradient and C is the Y intercept. It demonstrates the process with examples, showing how to calculate the gradient by finding the change in Y divided by the change in X, and how to identify the Y intercept. The tutorial provides step-by-step guidance on applying these concepts to find the equation of a line from given points on a graph.

What is the general form of the equation of a line?

• Y = MX + C

• Y = MX - C

• Y = M + CX

• Y = C - MX

In the equation Y = MX + C, what does the 'C' represent?

• The X-intercept

• The gradient of the line

• The Y-intercept

• The slope of the line

How do you calculate the gradient of a line using two points?

• Change in X divided by change in Y

• Change in Y divided by change in X

• Sum of X and Y changes

• Difference between X and Y changes

If a line crosses the Y-axis at Y = 2, what is the value of C?

• 0

• -2

• 2

• 1

What is the gradient of a line if the change in Y is 1 and the change in X is 4?

• 4/1

• 1

• 1/4

• 4