You want to wrap a gift shaped like the regular triangular prism shown. How many square inches of wrapping paper do you need to
completely cover the prism?
In a triangular prism, the front and back faces are triangles and the other faces are rectangles. In the front face, the base has length 10 inches. A dashed line joins the top vertex to the bottom side. The dashed line makes a right angle with the bottom side and has length 8.7 inches. The rectangular face on the right has height 14 inches.
In a triangular prism, the front and back faces are triangles and the other faces are rectangles. In the front face, the base has length 10 inches. A dashed line joins the top vertex to the bottom side. The dashed line makes a right angle with the bottom side and has length 8.7 inches. The rectangular face on the right has height 14 inches.
1 answer:
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Answer:
y = --0.25x + 1
Step-by-step explanation:
In order to find the equation of a line, you must first find the slope of the line.
The equation to find slope is .
Plug in the given points:
(x2, y2) = (-8,3)
(x1, y1) = (-4,2)
(y2 - y1) / (x2 - x1) = (3-1)/ (-8 - -4) = (3-2) / (-8 + 4) = 1/-4 = -0.25
Next, you solve for the y-intercept using one of the two coordinates:
y = -0.25x + b
2 = -0.25(-4) + b
2 = 1 + b
b = 2 - 1 = 1
y = -0.25x + 1