 New Zealand
Level 6 - NCEA Level 1

Direct Proportion

Interactive practice questions

Consider the values in each table. Which of them could represent a directly proportional relationship between $x$x and $y$y?

 $x$x $y$y $1$1 $3$3 $5$5 $7$7 $50$50 $40$40 $30$30 $20$20
A
 $x$x $y$y $1$1 $2$2 $3$3 $4$4 $5$5 $20$20 $45$45 $80$80
B
 $x$x $y$y $1$1 $2$2 $3$3 $4$4 $5$5 $10$10 $15$15 $20$20
C
 $x$x $y$y $1$1 $5$5 $6$6 $20$20 $100$100 $75$75 $50$50 $25$25
D
 $x$x $y$y $1$1 $3$3 $5$5 $7$7 $50$50 $40$40 $30$30 $20$20
A
 $x$x $y$y $1$1 $2$2 $3$3 $4$4 $5$5 $20$20 $45$45 $80$80
B
 $x$x $y$y $1$1 $2$2 $3$3 $4$4 $5$5 $10$10 $15$15 $20$20
C
 $x$x $y$y $1$1 $5$5 $6$6 $20$20 $100$100 $75$75 $50$50 $25$25
D
Easy
Less than a minute

Which graphs indicate that $y$y is directly proportional to $x$x? Select all that apply.

Which of the following are examples of direct variation between $x$x and $y$y? Select all the correct options.

Given that $y=5x$y=5x, find the missing values in the table.

Outcomes

NA6-1

Apply direct and inverse relationships with linear proportions

91026

Apply numeric reasoning in solving problems