## IB Math Studies Perpendicular lines

Number and algebra, Descriptive statistics, Logic, sets and probability, Statistical applications, Geometry and trigonometry, Mathematical models, Introduction to differential calculus.

### IB Math Studies Perpendicular lines

IB Math Studies, slope of a line, perpendicular and parallel lines

How can we find the slope of the line which is perpendicular to the line $y=-5x+14$ ?

Thanks
William

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Joined: Mon Jan 28, 2013 8:07 pm

### Re: IB Math Studies Perpendicular lines

IB Mathematical Studies, gradient of a line, perpendicular and parallel lines

If two lines are perpendicular their slopes are negative reciprocals and if two lines are parallel have equal slopes.
Regarding your question about the gradient of the line which is perpendicular to the line $y=-5x+14$,

Let $m$ be the required slope then we have the following relation
$m \cdot (-5)=-1 =>m=\frac{-1}{-5}= \frac{1}{5}$

Hope these help!
nicole

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Joined: Mon Jan 28, 2013 8:10 pm

### Re: IB Math Studies Perpendicular lines

Thanks Nicole!
William

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Joined: Mon Jan 28, 2013 8:07 pm