7.1 - 7.3 Solving Systems of Equations

Make sure that you have the following

things with you at the computer before

you begin.

 

1. pencil

2. paper

3. calculator

4. notes from 7.1 - 7.3

 

You must turn in your work when you

are finished.

State the solution:
State the solution:

The  equation listed is in what form?

 

y = 2x - 5

standard form

slope-intercept form

What information do you pull out of the equation?
y = 2x - 5

slope and y-intercept

x-intercept and y-intercept

y = 2x - 5

 

State the slope:

State the y-intercept:
Where do you start the graph?

slope

y-intercept

The  equation listed is in what form?

 

3x - 2y = 12

standard form

slope-intercept form

What information do you pull out of the equation?

3x - 2y = 12

slope and y-intercept

x-intercept and y-intercept

Find the x-intercept for the equation above:
3x - 2y = 12
How do you find the x-intercept?

it is already there:  3

 x = 0 and solve for y

 y = 0 and solve for x
Find the y-intercept for the equation above:
3x - 2y = 12
How do you find the y-intercept?

it is already there:  -2

 x = 0 and solve for y

 y = 0 and solve for x

Solve the following system of equations by

substitution.

y = 2x + 5

4x + y = 17

Solution:

Solve the following system of equations by

linear combination:

 

-30x + 4y = -20

    5x - 4y = -30

Solution:

On your paper,

Solve the following systems of equations by

linear combination:

 

6x + 2y = 2

-3x + 3y = -9

 

solution:

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