Answer:
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Answer:
x = 3
Step-by-step explanation:
Because the endpoints of the segment with length 12.5 are the midpoints of the sides of the large trapezoid, the length of that segments, 12.5, is the average of the lengths of the top and bottom lengths of the large trapezoid.
(3x + 1 + 15)/2 = 12.5
Multiply both sides by 2.
3x + 16 = 25
3x = 9
x = 3
In order to figure out if the equation is accurate, sub in the point to see if the left side equals the right side
1. Y=x-10
3=-7-10
3=-17
NO
2. Y=X+10
3=-7+10
3=3
YES
Therefore the answer is B, y=x+10
Hope this helps!
Y = (-x - 6)/2
2y = -x - 6
x + 2y + 6 = 0
-5/1. We know that the slope of a line (p) is perpendicular to that of line q, and so its slope will be the negative reciprocal. We can imagine this, as a line at 90 degrees to a line will have an opposite slope (positive/negative). By rotating it 90 degrees we also know that the run will become rise, and rise will become run, causing the reciprocal (keeping in mind that gradient is calculated by rise over run).