Where the Line Crosses the Axis: Author's Purpose

Read about the y-intercept of a line, then work out why the author wrote it.

Story Brief #406

The Y-intercept is the point where a line crosses the Y-axis on a graph.

🎯 Your mission

Find what matters in the words.

⚡ The twist

Slow down. The first answer that pops up isn't always the right one.

📖 1 of 2

The Y-intercept is the point where a line crosses the Y-axis on a graph. This means it is the value of Y when X is zero. To find the Y-intercept in an equation, you can set X to zero and solve for Y. For example, in the equation y = 2x + 3, if you substitute 0 for x, it becomes y = 2(0) + 3. This simplifies to y = 3, so the Y-intercept is 3. On a graph, this point would be located at (0, 3).

📖 2 of 2

The Y-intercept helps us understand the starting point of a line and can be useful in real-life situations, like predicting costs or analyzing trends. Knowing the Y-intercept allows us to make sense of how two variables relate to each other, particularly in linear equations.

Question 1

1 of 2

Why did the author most likely write this passage?

How sure are you going to be?😐 maybe

Question 2

2 of 2

Authors use examples to explain their ideas. Which sentence from the passage gives an example?

How sure are you going to be?😐 maybe

Nice work!

You got 0 of 2 right.

Next: One Input, One Output: Author's Purpose All lessons

🎯

Next Smart Lesson

We'll pick a lesson that matches exactly how well you're reading right now.

✨ More to explore

🏆 Try this week: Read for 10 minutes today — anything you want.

👨‍👩‍👧 At dinner: “What's one thing you read today that surprised you?”

📄Share card

Share this lesson

Send it to a parent or fellow reader. 5 minutes is all it takes.

Where the Line Crosses the Axis: Author's Purpose

Question 1

Question 2

Next Smart Lesson

Share this lesson

Where the Line Crosses the Axis: Author's Purpose

Done with reading? Try something else

Your Cart (0)