Final answer:
To solve y = 7x - 21, substitute any value for x and calculate y; for example, using x = 0 gives y = -21, creating the point (0, -21) on the line.
Step-by-step explanation:
To find a solution to the linear equation y = 7x - 21, you can select any value for x and then solve for y. Let's choose x = 0 as an example:
- Substitute x = 0 into the equation: y = 7(0) - 21.
- Calculate y: y = 0 - 21, which simplifies to y = -21.
Therefore, one solution to the equation y = 7x - 21 is x = 0 and y = -21. This means that the point (0, -21) lies on the line represented by the equation.