Let's analyze the two lines from the graph you provided.

Step 1: Identify the gradients of the lines

From the graph:

• The red line passes through two known points: $F(0, -2)$ and another point, say $P(-1, -3)$.
• The blue line passes through point $H(2, 1)$ and another point, say $Q(3, 3)$.

Gradient (Slope) of a line

The gradient $m$ of a line is given by the formula: $m = \frac{y_2 - y_1}{x_2 - x_1}$ where $(x_1, y_1)$ and $(x_2, y_2)$ are two points on the line.

Red line gradient calculation:

For the red line, using points $F(0, -2)$ and $P(-1, -3)$: $m_{\text{red}} = \frac{-3 - (-2)}{-1 - 0} = \frac{-3 + 2}{-1} = \frac{-1}{-1} = 1$

Blue line gradient calculation:

For the blue line, using points $H(2, 1)$ and $Q(3, 3)$: $m_{\text{blue}} = \frac{3 - 1}{3 - 2} = \frac{2}{1} = 2$

Step 2: Determine their relationship

• The red line has a gradient of $1$.
• The blue line has a gradient of $2$.

Since their gradients are different, these lines are not parallel. In fact, they have different slopes, meaning they will eventually intersect if extended.

Special observation:

The red line has a smaller slope compared to the blue line, which means it rises more gradually compared to the blue line. Additionally, because the lines are not parallel, they will intersect at some point in space, and we can calculate this point if needed.

Would you like to explore the intersection point or any further details?

Related questions:

1. How do you find the equation of a line if you are given a point and the gradient?
2. What is the significance of two lines having the same slope?
3. How can we determine the equation of the red and blue lines from this graph?
4. Can two lines intersect if their gradients are equal?
5. What is the geometric meaning of a gradient value greater than or less than 1?

Tip:

When comparing two lines, always check the slopes first to understand their orientation and whether they will ever intersect or remain parallel.