Write the equation of the line that passes through the points (-2,1) and (0,8)
2 answers:
Answer:
The equation of the line is y = 7/2x + 8
Step-by-step explanation:
The equation of the line is in the form y = mx + b, where m is the slope and b is the y-intercept. To find m, you just have to subtract the two points from each other.
= 7/2
The y - intercept always has an x-value of 0, so the y-intercept would be 8.
So, the equation is y = 7/2x + 8
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now, the triangles are just four triangles with a base of 6, and a height of 4, in red noted there.
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so, for the rectangle's sides,
front and back are two 6x3 rectangles
left and right are two 6x3 rectangles
the bottom part is a 6x6 rectangle
now, we don't include the 6x6 rectangle that's touching the triangles, because that's inside area, and is not SURFACE area, so we nevermind that one.
now, the triangles are just four triangles with a base of 6, and a height of 4, in red noted there.
so, just get the area of all those rectangles and the triangles, sum them up and that's the surface area of the composite,