On a straight-line graph, what does the gradient measure?
AWhere the line cuts y
BHow long the line is
CWhere the line ends
DHow steep the line is
Answer & Solution
Correct answer: D. How steep the line is
1. A straight line graph is written in the standard form with a gradient and a constant.
2. The gradient of a line is the measure of steepness.
3. Steepness is the ratio of the vertical change to the horizontal change.
4. The constant term is the y-intercept, which tells you where the line cuts the vertical axis instead.
_Source: Siyavula Mathematics Grade 10 (Everything Maths, CC BY 4.0), Chapter 6: Functions_
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