Step 8 Objective
Given values for m and c, find the gradient of lines given by equations of the form y = mx + c.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
How do you go about finding the gradient for a straight-line graph
- that has been drawn on a set of axes?
- from the equation given in the form y = mx + c?
- from a table of coordinates?
What happens to the straight-line graph as m changes (increases, decreases, is negative)?
What happens as c changes?
How would you go about identifying the graph of y = 3x – 5 on a set of axes?