Python allows free creation of plots, unlike expensive, stagnant graphing calculators. Import NumPy and Matplotlib for basic ...

{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 ...

{4} \) × 12 is 3. Solve the equation to find the value of 𝑐. The 𝑦-intercept, 𝑐, is –2. Write the equation of the perpendicular line with its gradient of 1/4 and 𝑦-intercept of –2.