Analyzing Rate of Change: Function Table with X-Values 1-4 and Y-Values -6 to 3

Question

Given a table showing points on the graph of a function, determine whether or not the rate of change is uniform.

XY1234-6-303

Video Solution

Solution Steps

00:00 Determine if the rate of change is uniform?
00:06 It appears that the change in X values is always equal
00:12 It appears that the change in Y values is always equal
00:19 And this is the solution to the question

Step-by-Step Solution

To determine if the rate of change is uniform, we need to calculate the slope between each pair of consecutive points and check for consistency.

Let's compute the slopes:

  • Between (1,6)(1, -6) and (2,3)(2, -3):
    Δy=3(6)=3\Delta y = -3 - (-6) = 3
    Δx=21=1\Delta x = 2 - 1 = 1
    Slope =31=3= \frac{3}{1} = 3
  • Between (2,3)(2, -3) and (3,0)(3, 0):
    Δy=0(3)=3\Delta y = 0 - (-3) = 3
    Δx=32=1\Delta x = 3 - 2 = 1
    Slope =31=3= \frac{3}{1} = 3
  • Between (3,0)(3, 0) and (4,3)(4, 3):
    Δy=30=3\Delta y = 3 - 0 = 3
    Δx=43=1\Delta x = 4 - 3 = 1
    Slope =31=3= \frac{3}{1} = 3

Since the slopes are all equal, the rate of change is the same between each pair of consecutive points.

Therefore, the rate of change is uniform.

Answer

Uniform