# Linear relations and graphs

• July 25th 2012, 09:50 PM
bbutale
Linear relations and graphs
A triangle is made from the coordinate axes and the line 4x+5y+p=0 . The area of the triangle is 10 square units. What is the value of p?
• July 25th 2012, 10:22 PM
pickslides
Re: Linear relations and graphs
Solving for the x & y intercepts then applying the formula for the area of a triangle you should get

$10 = \frac{1}{2} \times \frac{-p}{4} \times \frac{-p}{5}$

Solve for p