Grade 9 Math Revision Worksheet

Which of the following sets of ordered pairs represents a function?

• (1,2),(2,3),(1,4)

• (1,2),(2,3),(3,4)

• (1,2),(2,2),(3,2)

• (1,2),(2,3),(3,3),(1,4)

Tags

CCSS.8.F.A.1

What is the domain of the function f(x)=3x+2?

• All real numbers

• All positive integers

• x≥0

• x≤0

Which of the following is not a function?

• y=2x+1

• y=x/4

• x=y2

• y=1/x​

Which graph represents a one-to-one function?

• A horizontal line

• A vertical line

• A parabola opening upwards

• A diagonal line with a positive slope

What is the range of the function f(x)=∣x∣?

• All real numbers

• All non-negative real numbers

• All positive integers

• All negative real numbers

Which of these is a characteristic of a function's graph if it is increasing over its entire domain?

• The graph is a horizontal line

• The graph is a vertical line

• The graph slopes upwards from left to right

• The graph slopes downwards from left to right

Which of the following expressions represents a function?

• x3+y=0

• x2+y2=1

• y=x1/2

• x=y1/2

Tags

CCSS.8.F.A.1

What does the vertical line test determine?

• If a graph is a line

• If a graph is a function

• If a graph is a parabola

• If a graph is increasing

Express each relation as a table, a graph, and a mapping. Then determine the domain and range.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Determine whether each relation is a function. Explain.