Final answer:
To find when the line crosses over the 5 on the x-axis, we can use the equation y = mx + b, where m is the slope and b is the y-intercept. Solving for x, we find that the line crosses over the 5 on the x-axis at x = -4/3.
Step-by-step explanation:
To find when the line crosses over the 5 on the x-axis, we need to determine the x-coordinate at which the line intersects the x-axis. Since the slope of the line is 3, it means that for every increase of 1 on the horizontal axis, there is a rise of 3 on the vertical axis. Therefore, to find the x-coordinate when the line crosses over the 5 on the x-axis, we can use the equation y = mx + b, where m is the slope and b is the y-intercept. In this case, the y-intercept is 9. Substituting the values into the equation, we get 5 = 3x + 9. Solving for x, we subtract 9 from both sides, resulting in -4 = 3x. Finally, dividing both sides by 3, we find that the line crosses over the 5 on the x-axis at x = -4/3.