Last updated on Oct 23, 2026

Graphing/Sketching Lines (Junior Cert Mathematics): Quizzes

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Graphing/Sketching Lines

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What is the $x-intercept$ of a line?

Point where line crosses $x-axis$

What is the value of $y$ at the $x-intercept$ ?

$y = 0$

What is the $y-intercept$ of a line?

Point where line crosses $y-axis$

What is the value of $x$ at the $y-intercept$ ?

$x = 0$

How do you find the $y-intercept$ of a line?

Substitute $x = 0$ into equation

How do you find the $x-intercept$ of a line?

Substitute $y = 0$ into equation

The $x-intercept$ tells us where the line hits which axis?

Horizontal axis

How many points do you need to draw a straight line?

Two points

For $2x - y = 4$ , what is the $y-intercept$ ?

$(0, -4)$

For $2x - y = 4$ , what is the $x-intercept$ ?

$(2, 0)$

After plotting the intercepts, what is the final step?

Draw a straight line through the points

What is the first step in graphing a line?

Find the $y-intercept$

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