Solving Equations and Inequalities with Desmos

This video tutorial covers solving equations and inequalities using the Desmos graphing calculator. It provides step-by-step instructions on inputting equations, identifying x-intercepts, and taking screenshots to show work. The tutorial emphasizes the importance of understanding the process, not just relying on technology. It also explains how to handle inequalities and fractions in Desmos, offering practical tips for students to practice on their own.

Why is it important to show your work manually when solving equations?

• Because technology is unreliable

• To ensure you understand the process

• To save time

• Because teachers prefer it

Tags

CCSS.8.EE.C.7B

What should you do if you need to split your screen while using Desmos?

• Use a mobile device

• Use a different computer

• Watch a one-minute video for instructions

• Ask a friend for help

When typing an equation into Desmos, which variable should you always use?

• p

• k

• y

• x

What is the first step after typing the equation into Desmos?

• Take a screenshot

• Find the x-intercept

• Find the y-intercept

• Print the graph

Tags

CCSS.HSF-IF.C.7A

How do you take a screenshot on a Chromebook?

• Ctrl + Shift + S

• Ctrl + P

• Ctrl + Shift + Change Window

• Ctrl + Alt + Delete

What should you do if Desmos gives an error message about unsupported variables?

• Ignore the message

• Change all variables to x

• Contact support

• Restart Desmos

Tags

CCSS.HSF-IF.C.7B

How do you determine if the solution to an inequality is greater than or less than?

• By using a calculator

• By comparing with another equation

• By checking the shading direction

• By looking at the y-intercept

Tags

CCSS.HSA.REI.D.12

What symbol should you use if the shading is to the right of the x-intercept?

• Greater than

• Less than

• Equal to

• Not equal to

Tags

CCSS.HSA.REI.D.12

How do you type a fraction like 1/3 in Desmos?

• Type it as a decimal

• Type 1/3 directly

• Use the slash key

• Use the fraction button

What should you do if Desmos does not recognize a fraction symbol?

• Contact support

• Use a different calculator

• Type the fraction using the slash key

• Ignore the error