Checking and securing plotting a relationship | Maths

Starter quiz

In algebra, when we replace variables with values we call this ______.
- transforming
- substituting ✓
- calculating
- solving
What is this coordinate?
- $(4,2)$
- $(2,4)$ ✓
- $2,4$
- $4,2$
Which statements are true of this coordinate?
- The $y$ -coordinate is double the $x$ -coordinate. ✓
- The $y$ -coordinate is half the $x$ -coordinate.
- The $y$ -coordinate is $2$ more than the $x$ -coordinate. ✓
- The $y$ -coordinate is $2$ more than the $x$ -coordinate. ✓
- The $x$ -coordinate and $y$ -coordinate sum to $4$ .
What is the value of the expression $5x-1$ when $x=3$ ?
- '14' ✓
What is the value of the expression $5x-1$ when $x=-3$ ?
- $-16$ ✓
- $-14$
- $14$
- $16$
Starting with the lowest, order the value of these expressions when $x=2$ .
- 1
  
  ⇔
  
  $4x-5$
- 2
  
  ⇔
  
  $10-3x$
- 3
  
  ⇔
  
  $7-x$
- 4
  
  ⇔
  
  $3x$
- 5
  
  ⇔
  
  $x+5$