**LINEAR FUNCTIONS – SCRATCH**

**1.** The code at right does the following:

- Starts with the number sentence
**__ + __ = 10** - Randomly picks a value between -100 and 100 for the first number (
**x**) - Calculates the second number (
**y**) - Plots the ordered pair of the two numbers
**(x, y)** - Predict what the graph will look like and explain your reasoning

**2.** Try this code at https://scratch.mit.edu/projects/195546507/#editor. Why do the **(x, y)** pairs line up even though the x values are random? Edit parameters to explore.

**3.** Try the code at right at mit.edu/projects/162466805/#editor. Sample output shown below. Change parameters to investigate and determine how it works.

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**4. **Write to explain the purpose of this block of code.

**5.** Write to explain the role of **m** and **b** in the code in #3 (above). Draw and label illustrative graphs on the grid below and refer to them in your explanations.

**6.** Study the code below. Write to describe what it does.

**7.** Run the code at https://scratch.mit.edu/projects/195547342/#editor. Change **m1** values to explore. Write to describe the effect of the negative reciprocal value of **m2**. Illustrate with a sketch.