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Hi! I am Zora and this is Jarriah and Elijah. We will be teaching you lessons 44 and 49.
Lesson 44 is to Distinguish between situations that can be modeled with linear functions and with exponential functions.
Lesson 49 is to Represent data with plots on the real number line (dot plots, histograms, and box plots.
Lets start with lesson 44. What you need to know is that linear functions are functions with a constant rate of change. They are written in the form of y=mx+b.
Exponential functions have a slop that is raised to the x power. It looks like y=abx
The differences between linear and exponential functions is that the linear functions are straight lines while exponential functions look like a j-curve. Linear functions are constant. Exponential functions are not.
For example, the function y=2x+9 is a linear function. The 2x is the rate of change while 9 is the y-intercept.
The function y = 2x is an example of an exponential function.
Now lets do lesson 49. A data plot holds data from a set of numbers. The first one we'll talk about is a dot plot. A dot plot is basically a number line with dots over the numbers depending on the situation.
A histogram is a diagram consisting of rectangles whose area is proportional to the frequency of a variable and whose width is equal to the class interval.
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