Checking and securing understanding of plotting coordinates with technology | Maths

Starter quiz

The vertical and horizontal lines that divide our coordinate grid into the four quadrants are called ...
- axes ✓
- grid lines
- parallel lines
Which of these is a correctly formatted coordinate?
- $2,7$
- $(2/7)$
- $2:7$
- $(2$ $7)$
- $(2, 7)$ ✓
Which of these coordinates fits the rule "The $y$ coordinate is five times the $x$ coordinate minus $1$ ?
- $(0, 1)$
- $(0, −1)$ ✓
- $(5, 4)$
- $(5, 24)$ ✓
- $(5, −1)$
Which arithmetic sequence is represented by this table of values?
- $n+7$
- $7n+7$
- $7(n+7)$
- $7n$ ✓
Arithmetic sequences have which features?
- A constant difference between terms. ✓
- They form a straight line when plotted. ✓
- They form a curve when plotted.
- Increasing values.
Which relationship is represented by this table of values?
- $y=6−2x$ ✓
- $y=x−2$
- $y=2x−6$
- $y=8−2x$

Which words describe this plotted sequence?
- linear ✓
- arithmetic ✓
- increasing
- decreasing ✓
- quadratic
Why did the software not plot the coordinate $(3, 5)$ in this image?
- Because $3$ and $5$ aren't labelled on the $x$ and $y$ axes.
- The scale on the axes is wrong.
- We are zoomed in on the wrong region of the graph to see it.
- You have to write the coordinate pair in brackets. ✓
Which arithmetic sequence is represented here?
- $n$
- $−2n$
- $5−2n$
- $7−2n$ ✓
How do we know that $(2,−3)$ does not follow the same linear rule as the other coordinates?
- It's in the wrong quadrant.
- It's plotted wrong.
- It doesn't align with the other coordinates. ✓
- Because the $y$ coordinate is less than the $x$ coordinate.
Which term is incorrect in this arithmetic sequence?
- The $1^{\text{st}}$ one
- The $3^{\text{rd}}$ one
- The $5^{\text{th}}$ one ✓
- The $7^{\text{th}}$ one
Which coordinate fits both of the rules $y=8−x$ and $y=3x−4$ ?
- $(0, 8)$
- $(8, 0)$
- $(3, 5)$ ✓
- $(5, 3)$
- No coordinate fits both rules.

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When plotting the sequence $3n-1$ using technology you need to type each coordinate individually.

"We use technology to make things easier. There must be a quicker way!" Look for the 'table' function.

Arithmetic (linear) sequence - A sequence where the difference between successive terms is a constant.