What can we say about the gradient of this line?
The line has a positive gradient.
The line has a negative gradient.
The line has a gradient of zero.
The line has an undefined gradient.
What can we say about the gradient of this line?
Consider the interval between $A$A$\left(2,4\right)$(2,4) and $B$B$\left(8,6\right)$(8,6).
Consider the interval between $A$A$\left(-3,4\right)$(−3,4) and $B$B$\left(3,16\right)$(3,16).