# Using a Graphing Calculator(1)

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Using a Graphing Calculator

Goal
•use a graphing calculator to graph linear equations and find solutions.

Key Words
•window •graph •zoom •table

EXAMPLE

1

Evaluating Expressions

Evaluate the expression. 15 - 5 + 52

2 (6 + 10) - 8

EXAMPLE

1

Evaluating Expressions

Evaluate the expression. 19.23 – (8.72 + 9.6 ×2.7) 12 - 4 · 2

(12 - 4) · 2
12 - 4 · 2 ÷ 10

(12 - 4) · 2 ÷ 10

EXAMPLE

2

Evaluating Expressions

Evaluate the expression. 12 - 4 · 2 ÷ 10 + 6 (12 - 4) · 2 ÷ 10 + 6

12  4  2 10  6
(12 - 4 · 2) ÷ (10 + 6)

To insert a variable into an expression you will use the variable button. Locate this feature.

X,T,θ, n

EXAMPLE

3

Graphing a Linear Equation

Use a graphing calculator to graph the equation. y = 2x – 4.

Try These

1. y = -2x - 3

2. y = 2x + 2

3. y = 5x + 4

EXAMPLE

4

Graphing a Linear Equation

Use a graphing calculator to graph the equation.

5 y= x – 30. 3

EXAMPLE

4

Graphing a Linear Equation

Use a graphing calculator to graph the equation.

2 y= x – 30. 3
x

y

EXAMPLE

4

Graphing a Linear Equation

Use a graphing calculator to graph the equation.

7 y =  x + 16 8

EXAMPLE

6

Graphing a Linear Equation – Finding Intercepts

Find the intercepts of the line: 2x + 6y = 9

EXAMPLE

7

Finding Points using a Table.

Find the solutions of the equation: 2x + 6y = 9
1 3 y x 3 2

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