Algebra Review - With Desmos

​Solving Equations - With Desmos

​Evaluating Expressions

​It is important that you know how to enter expressions into Desmos Properly.

Multiple Choice

4² × 2 + [7 - (3² - 5)]

Remember to put an extra parenthesis in place of brackets or braces

• 35

• 48

• 64

• 96

​Evaluating Variable Expressions

You will need to use Capital Letters for X and Y, all others can remain lower case.​

Multiple Choice

Evaluate m² - ( - k) + 4

^{when m = - 3 and k = - 7}

^{Remember to Use Sliders for m and k or simply type in the values for m and k}

• -6

• -9

• 6

• 9

Multiple Choice

Evaluate: x - y - x² , when x = -3 and y = -2

You MUST use a Capital X and Y when doing these on Desmos.

• -10

• 9

• -3

• -13

Solving Equations​

You can solve equations by Graphing on the Desmos Calculor.

​Always use lower case x for the variable.

Multiple Choice

Multi-Step Equations can be solved on Desmos

Solve for b:  3(b - 4) = -3

replace the "b" with an "x" and solve.

• b = 3

• b = -3

• b = 5

• b = -5

Multiple Choice

Remember to hi-light the numerator and then click on divide

• x = 24

• x = 12

• x = 17.5

• x = 19.5

​Sometimes Equations have more than one solution!!

Multiple Choice

−2|−2r − 4| = -12

• {3,1}

• {-5,1}

• {-3}

• No Solution

Multiple Choice

Solve the Following Equation.

$$2x^2+5x-12=0$$  ?

We will learn how to work these out later, for now try to solve with your Desmos Calculator.

• $$\left\{4,\ -7\right\}$$  

• $$\left\{-2,\ 14\right\}$$  

• $$\left\{-4,\ \frac{3}{2}\right\}$$  

• $$\left\{-25,\ 28\right\}$$