Last updated on Sep 20, 2026

y = mx + c (AQA GCSE Maths): Quizzes

The equation of a straight line: $y = mx + c$

Practise the questions

10 questions from this quiz

The gradient of the line

The y-intercept

Standard form

The coefficient of $x$

Isolate $y$ on one side

Find where it crosses the y-axis

$\frac{\text{change in y}}{\text{change in x}}$

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$y = -2x + 5$

Substitute both points back in

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y = mx + c (AQA GCSE Maths): Quizzes

Practise the questions

In the equation y=mx+cy = mx + cy=mx+c, what does mmm represent?

In the equation y=mx+cy = mx + cy=mx+c, what does ccc represent?

What is the y=mx+cy = mx + cy=mx+c format also called?

In y=mx+cy = mx + cy=mx+c, what is mmm always described as?

What is the first step when rearranging equations into y=mx+cy = mx + cy=mx+c format?

How do you find the y-intercept (ccc) from a graph?

What is the formula for calculating gradient?

What formula finds gradient from two points (x1,y1)(x_1, y_1)(x1​,y1​) and (x2,y2)(x_2, y_2)(x2​,y2​)?

A line through (−2,9)(-2, 9)(−2,9) and (3,−1)(3, -1)(3,−1) has gradient −2-2−2 and c=5c = 5c=5. What is the equation?

How should you verify your final straight-line equation is correct?

Explore AQA GCSE Maths Revision Notes by Topics

Straight Lines and Gradients

y = mx + c

Drawing Straight Line Graphs

Coordinates and Ratio

Parallel and Perpendicular Lines

Quadratic Graphs

Harder Graphs

Solving Equations Using Graphs

Graph Transformations

Real-Life Graphs

Distance-Time Graphs

Velocity-Time Graphs

Gradients of Real-Life Graphs

Graph Transformations

Real-Life Graphs

Distance-Time Graphs

Velocity-Time Graphs

Gradients of Real-Life Graphs

Explore AQA GCSE Maths Model Answers by Topics

Straight Lines and Gradients

y = mx + c

Drawing Straight Line Graphs

Coordinates and Ratio

Parallel and Perpendicular Lines

Quadratic Graphs

Harder Graphs

Solving Equations Using Graphs

Graph Transformations

Real-Life Graphs

Distance-Time Graphs

Velocity-Time Graphs

Gradients of Real-Life Graphs

Graph Transformations

Real-Life Graphs

Distance-Time Graphs

Velocity-Time Graphs

Gradients of Real-Life Graphs

Explore AQA GCSE Maths Flashcards by Topics

Straight Lines and Gradients

y = mx + c

Drawing Straight Line Graphs

Coordinates and Ratio

Parallel and Perpendicular Lines

Quadratic Graphs

Harder Graphs

Solving Equations Using Graphs

Graph Transformations

Real-Life Graphs

Distance-Time Graphs

Velocity-Time Graphs

Gradients of Real-Life Graphs

Graph Transformations

Real-Life Graphs

Distance-Time Graphs

Velocity-Time Graphs

Gradients of Real-Life Graphs

Explore AQA GCSE Maths Exam Questions by Topics

Straight Lines and Gradients

y = mx + c

Drawing Straight Line Graphs

Coordinates and Ratio

Parallel and Perpendicular Lines

Quadratic Graphs

Harder Graphs

Solving Equations Using Graphs

Graph Transformations

Real-Life Graphs

In the equation $y = mx + c$ , what does $m$ represent?

In the equation $y = mx + c$ , what does $c$ represent?

What is the $y = mx + c$ format also called?

In $y = mx + c$ , what is $m$ always described as?

What is the first step when rearranging equations into $y = mx + c$ format?

How do you find the y-intercept ( $c$ ) from a graph?

What formula finds gradient from two points $(x_1, y_1)$ and $(x_2, y_2)$ ?

A line through $(-2, 9)$ and $(3, -1)$ has gradient $-2$ and $c = 5$ . What is the equation?