Find the area of a triangle bounded by the y-axis, the line f(x)=12-4x, and the

Step-by-step explanation:

1. The line y=12-4x has the slope -4, then perpendicular line will have slope

The equation of this perpendicular line is

2. The vertices of the triangle are at points:

A: x=0, y=0.

B: x=0, y=12.

C:

3. The height of the triangle ABC is x-coordinate of point C, so the base of the triangle is the length of the segment AB, 12 cm.

4. The area of the triangle ABC is

$5

Step-by-step explanation:

Leo has $5, because if he started with $8 and spent 3, he now had 5.