{2}\). The line crosses the 𝑦-axis at 3, so the 𝑦-intercept is 3. Back to top Equation of a line from a graph – interactive activity Working with the general equation of a straight line ...

The constant, 𝑐, is the 𝑦-intercept. This is the value where the line crosses the 𝑦-axis. Let's look at an example question. A straight line passes through the points (1, 5) and (3 ...