8.5I Spiral Review

Do Now Questions

Here's 2 questions to answer for your Do Now in your notebook

Set Up Your R-D-W (Read-Draw-Write) for the problems on screen

You should use DESMOS STAAR to help you solve

December 11, 2025

TEK 7.4A & 7.11A

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Do Now Questions

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John

John's

Multiple Choice

David drove 232 miles in 4 hours and 319 miles in 5.5 hours. What is the constant rate of change?

• 50 miles per hour

• 56 miles per hour

• 58 miles per hour

• 62 miles per hour

Multiple Choice

John started a coin collection. His dad gave him 75 coins. Each month he will add 20 coins to the collection.

Which equation can be used to find y, the total number of coins in John's collection after x months?

• y = 75x + 20

• y = 20x + 75

• y = 75x - 20

• y = 20x - 75

Math 8.5I

Writing Equations

​TEK 8.5I
Write an equation in the form y = mx + b to model a linear relationship between two quantities using verbal, numerical, tabular, and graphical representations

By Ms Boateng

Write an equation for the situation into your notebook
Be prepare to write it on the next slide

Draw

Rod is paid overtime rate of $25 per hour after his basic wage of $600 per week. Write an equation in slope intercept form for the total p if he works h hour of overtime

​Identify what your slope and y-intercept is going to be

Problem 1

Multiple Choice

Which equation would be correct for slope intercept form for the table?

• y = 3/4 x + 2

• y = 4/3 x + 5

• y = 2x + 3/4

• y = 5x + 4/3

Drag and Drop

Create an equation that represents the linear relationship shown on the graph within the image.

Fill in the blanks for the different parts of the equations.



y = ​

Placeholder

x + ​

Placeholder

Drag these tiles and drop them in the correct blank above

3/2

6

-4

2/3

-3/2

4

-2/3

Drag and Drop

The table shows the linear relationship between the altitude of a hot air balloon and the number of minutes since it began its decent.

Create an equation to find the altitude of the balloon, y, after descending for x minutes.



y = ​

Placeholder

x + ​

Placeholder

Drag these tiles and drop them in the correct blank above

-15

1000

-30

1030

Multiple Choice

A motor car race is 500 miles long and consists of completing laps of a circular speedway that has a circumference of 2.5 miles. For which of these functions does y represent the number of miles a motor car has left to go in the race if x represent the number of laps completed by the motor car?

• y = -2.5x + 500

• y = -2.5x - 500

• y = 2.5x - 500

• y = 2.5x + 500

Multiple Choice

What is the equation of this line?

• y = 2x +2

• y = 2x -2

• y = -x + 2

• Cannot be Determined

Graphing

Graph y = x - 2 on the coordinate grid.

Multiple Choice

Which equation matches the graph? 

(Click the photo to see the image)

• y = 2x
• y = 1/4 x + 2
• y = 1x + 4
• y = -2x

Multiple Choice

Find the slope of the line provided on the graph

• 6

• -4

• -2/3

• 3/2

Multiple Choice

Which of the following equations represents a proportional relationship?

• $$y = 3x + 2$$

• $$y = 0.5x$$

• $$y = x - 4$$

• $$y = 2x + 1$$

Multiple Choice

What is the equation of the line that passes through (-2, 3) and has a slope of 4?

• y = -2x + 3

• y = 4x - 2

• y = 4x + 3

• y = 4x + 11

Multiple Choice

Write the slope-Intercept form of this line:

• $$y=4x+\frac{1}{2}$$

• $$y=-x+4$$

• $$y=\frac{1}{2}x+4$$

• $$y=x+4$$

Multiple Choice

Given the table, write the equation in the slope-intercept form.

• y = 1/3x + 6
• y = 3x + 6
• y = 2x + 6
• y = 1/2x + 6

Multiple Choice

Write the slope-intercept form of the equation when given the graph.

• $$y=\frac{4}{5}x+3$$  

• $$y=\frac{-4}{5}x+3$$  

• $$y=-4x-3$$  

• $$y=3x-4$$  

Multiple Choice

Write this equation into slope intercept form:

3x + y = 12

• y = -3x +12
• x = y + 4
• x = y + 12
• y = 3x -12

Make sure to show your work as you're working on I-Ready

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Work on your I-Ready Path