Question 1

Which of the following functions is not linear?

Accepted Answer

y = x^2 + 3

Answer

y = 2x + 5

Answer

y = 0.5x - 4

Answer

y = -3x

Question 2

Which of these equations does not describe a linear function?

Accepted Answer

y = 2^x

Answer

y = 3x - 4

Answer

y = -1/2x + 5

Answer

y = 0.25x + 10

Question 3

What does the 'b' in the linear equation y = mx + b represent?

Accepted Answer

The y-intercept of the line

Answer

The maximum value of y

Answer

The slope of the line

Answer

The x-intercept of the line

Question 4

If the equation of a line is y = 5x + 2, what does the '5' represent?

Accepted Answer

The slope of the line

Answer

The x-intercept of the line

Answer

The y-intercept of the line

Answer

The curvature of the line

Question 5

Which expression represents a linear function?

Accepted Answer

y = 4x - 7

Answer

y = (1/2)x^3 - x

Answer

y = 3x^2 + 2

Answer

y = sqrt(x) + 1

Question 6

Which function is an example of a non-linear function?

Accepted Answer

y = x^3 - 2x

Answer

y = -2x - 7

Answer

y = 5x + 1

Answer

y = 4x

Question 7

What characteristic is unique to linear functions?

Accepted Answer

Their graphs are straight lines.

Answer

Their output values decrease as input values increase.

Answer

Their equations involve variables to the second power.

Answer

Their graphs are parabolas.

Question 8

If a graph of a function is a straight line that passes through the origin, what can be said about the equation of this function?

Accepted Answer

It does not have a y-intercept other than 0.

Answer

The slope of the line is 0.

Answer

The function is non-linear.

Answer

It can be represented by y = x^2 + 1.

Question 9

Which of these equations represents a function whose graph will not be a straight line?

Accepted Answer

y = x^2 + 6

Answer

y = 2x - 3

Answer

y = -4x + 1

Answer

y = 0.5x + 5

Question 10

Which of the following represents a linear equation?

Accepted Answer

y = -7x + 3

Answer

y = 1/x

Answer

y = x^2 - 4x + 4

Answer

y = 3^x

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