The linear equation that describes this relationship is y = (1/3)x
Linear equation
A linear equation is in the form:
y = mx + b
where y, x are variables, m is the slope of the line (rate of change) and b is the initial value of y.
Let y represent the actual size in inches and x the actual size in ft.
From the graph using the points (0, 0) and (4.5, 1.5):
y - 0 = [(1.5 - 0)/ (4.5 - 0)](x - 0)
y = (1/3)x
The linear equation that describes this relationship is y = (1/3)x
The probable question may be:
Model Cars
*
The graph relates the actual size of a car in feet to a model of the car
in inches. Write an equation that describes the relationship.
3
2
Model Size (in.)
0
1
2 3 4
Actual Size (ft)
Type an equation in y = mx form.
(Type an equation. Use integers or fractions for any numbers in the equation.)