Linear Functions Test

A business purchases a computer for $2000. The value of the computer depreciates $400 per year. Which linear equation gives the value y of the computer after x years?

• y = 400x + 2,000

• y = 2,000x - 400

• y = 2,000x + 400

• y = -400x + 2,000

When x is 3, y is 12. If y varies directly as x, which equation relates x and y?

• y = 4x

• y = 36/x

• y = 15-x

• y = x + 9

Which linear function has a line perpendicular to 2x + y = 6

• y = 2x - 6

• y = -1/2x + 6

• y = 1/2 x - 6

• y = -2x + 6

The standard form of the equation 5y - 6x = 30

• -6x + 5y = 30

• y = 6/5x + 6

• 5y - 6x = 30

• 6x - 5y = -30

Perpendicular Lines have ______________ ______________ slopes

• Opposite Positive

• Opposite

• Same

• Opposite Reciprocal

Describe these 2 lines; 3x - 5y = 6 and 6x - 10y = 12

• parallel

• perpendicular

• the same

• opposites

Which of the following is NOT a function?

• y = 4

• x = 3

• y=2x

• y=x

Find the slope of the line through each pair of points.

• A

• B

• C

• D

Find the slope of the line through each pair of points.

• A

• B

• C

• D

Find the slope of the line through each pair of points.

• A

• B

• C

• D