Math Help - Linear relations and graphs

1. 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?

2. 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