Last updated on Sep 20, 2026

Practice Problems (Junior Cert Mathematics): Quizzes

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What is true about the slopes of parallel lines?

They have the exact same slope

In the equation $y = mx + c$ , what does $m$ represent?

The slope

What is the slope of a line parallel to $y = 5x - 7$ ?

$5$

At what angle do perpendicular lines meet?

$90$ degrees

What do the slopes of perpendicular lines multiply to give?

$-1$

What is the slope of a line perpendicular to $y = -2x + 5$ ?

$\frac{1}{2}$

What is the slope of a line perpendicular to $y = \frac{2}{5}x + 1$ ?

$-\frac{5}{2}$

Are the lines $y = 4x + 1$ and $y = 4x - 3$ parallel, perpendicular, or neither?

Parallel

If two lines have slopes $m = 6$ and $m = -\frac{1}{6}$ , what is their relationship?

Perpendicular

What is the point-slope formula for a line?

$y - y_1 = m(x - x_1)$

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