7A: Classwork Day 1: CFU, L1&2 (4/19-4/23)

Classwork Day 1: Equations of Lines, Lessons 1 and 2

Take out your math notebook and soemthing to write with.

Lesson 1 Check for Understanding

Use your notes from lesson 1 to answer the following 5 questions.

Multiple Choice

1) In a proportional relationship between variables x and y, which of the expressions represents the constant of proportionality?

• $x+y$

• $\frac{x}{y}$

• $x\cdot y$

• $\frac{y}{x}$

Fill in the Blanks

2) In a proportional relationship, when x = 3, we know that y = 15. What is the constant of proportionality?

Type only the number in the answer blank

Fill in the Blanks

3) Write the equation that can be used to show the relationship between the two variables from #2.

Multiple Choice

4) In a proportional relationship, y = 2 when x = 8. Which equation describes this relationship?

• $y=\frac{1}{4}x$

• $y=4x$

• $y=x-6$

• $y=\frac{1}{2}x-2$

Multiple Choice

5) A proportional relationship exists between x and y. When x = 8, y = 14. Which equation describes this relationship?

• $y\ =\ \frac{1}{6}x$

• $y=\frac{7}{4}x$

• $y=\frac{4}{7}x$

• $y=6x$

Lesson 2 Check for Understanding

Use your notes from Lesson 2 to answer the following questions.

Fill in the Blanks

1) Caleb and Ynez are both selling brownies for a fundraiser. Caleb displays the pricing of his brownies in a graph and Ynes displays his pricing in a table. Who charges more per brownie? Enter the name only and be sure it is spelled correctly.

Multiple Choice

2) Which equation describes the relationship between the cost of Caleb's brownies, c, and the nuber of brownies purchased, b?

• $c=0.80b$

• $b=0.80c$

• $c=1.25b$

• $b=1.25c$

Multiple Choice

3) How much does Ynez charge for 1 brownie?

• $0.80

• $0.75

• $1.25

• $3.00

Fill in the Blanks

4) How much would it cost to buy 50 of caleb's brownies? Enter the number only.

How did you do?? If you did not get 100%, ask questions and try again!

If you are confident with the questions in this classwork, go back to your google slides and move onto the next slide (slide 6)