The equation of the straight line is given in the form $y = 5x - 4$, which is the slope-intercept form $y = mx + c$, where:

• $m$ is the gradient (slope) of the line, and
• $c$ is the y-intercept.

In your equation, $m = 5$. Therefore, the gradient of the line is 5.

Would you like further details or explanations?

Here are 5 related questions to consider:

1. How do you find the gradient of a line if it's not in slope-intercept form?
2. What does the gradient of a line represent graphically?
3. How do you determine the y-intercept from an equation like this?
4. What would happen to the gradient if the line were steeper or flatter?
5. How do you find the equation of a line given two points?

Tip: The gradient represents how steep the line is; a larger gradient means a steeper slope.