9514 1404 393
Answer:
a. perpendicular
Explanation:
A graph shows the lines have opposite reciprocal slopes (rise/run), so the lines are perpendicular.
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Using the slope formula, the slope of the first line is ...
m = (y2 -y1)/(x2 -x1)
m = (11 -6)/(-7 -(-3)) = 5/-4 = -5/4
The slope of the second line is ...
m = (4 -8)/(-4 -1) = -4/-5 = 4/5 . . . . . opposite reciprocal to the first slope
Answer: B
Explanation:
A galaxy is a system of solar systems and other stars. Galaxies, like solar systems, are held together by gravity. In galaxies, the solar systems are separated by vast sections of mostly empty space. The galaxy that contains the Earth and its solar system is called the Milky Way.
Greeks because the first Olympic Games took place in Olympia, Greece.
Answer:
The total value of goods produced and services provided in a country during one year.
Explanation:
False. Contour lines indicate different levels of elevation. One line might indicate an elevation of 100 feet, and the line next to it an elevation of 200 feet, and so on. When those lines are close together it means that the elevation is rising very quickly from 100 feet to 200 feet, which means a steeper slope. When those lines are farther apart, it means that there's a lot more space between the 100-foot elevation and the 200-foot elevation, which means a more gentle slope.
