How to graph equations and find equations from graphs.
A table of values is used to generate points.
These points can be plotted on the coordinate plane.
A straight line drawn through these points creates the graph of the equation.
Graph y = 2x – 5
Plot these points on the coordinate plane.
Graph the following straight lines:
y = 3x – 4
y = 2x + 1
y = x – 5
y = -3x +2
Look for a relationship between the graphs and their algebraic expressions!!!
When a linear function is written in the form
y = mx + b
the m is its gradient and the b is its y-intercept.
For the following graphs, determine their equation.