Writing Equations

Which operation do these words mean?

SUM, INCREASE, MORE THAN

What operation do these words mean?

DIFFERENCE, LESS THAN, DECREASED

What is the correct equation for the graph?

• y = x + 5

• x = y

• y = 5x

• x = 5y

Write an equation that represents the relationship between the variables in the table.

• t=10d

• t=d-9

• t=10-d

• d=t+10

A tank contains 20 gallons of gasoline. Two gallons are drained out of the tank every minute. Write a function that describes the sentence above.

The start up cost to join eTunes music is $7.95 plus $0.95 per song downloaded.  Write a linear equation that could be used to find how many songs he downloaded.

• y = 0.95x + 7.95
• y = 7.95x + 0.95
• y = 0.95x - 7.95
• y = - 0.95x + 7.95

Find the slope

• -5/7
• 7/5
• -7/5
• 5/7

Write the equation of the line.

• y= -1x-3
• y= -3x-1
• y=-1/3x-1
• y= -3x-3

Write the equation for the line in slope-intercept form.

• y= -1x+3
• y= 4x+3
• y=1/4x+3
• y= -4x+3

Which is the graph of y= -x + 2? 

• A
• B
• C
• D