Answer:
Rate of change = 5
Step-by-step explanation:
Rate of Change of a Function means the change in y-value per 1 unit of x-value, it is also called Slope for linear function. Rate of change for point (x₁, y₁) and point (x₂, y₂) can be formulated:
[tex]\boxed{rate\ of\ change=\frac{\Delta y}{\Delta x}=\frac{y_2-y_1}{x_2-x_1} }[/tex]
Given:
x₁ = 1
y₁ = -1
x₂ = 2
y₂ = 4
[tex]\displaystyle rate\ of\ change=\frac{4-(-1)}{2-1}[/tex]
[tex]=5[/tex]
