A square is shown below. Which expression can be used to find the area, in square units, of the shaded triangle in the square?
1 answer:
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Given:
The vertices of a triangle are R(3, 7), S(-5, -2), and T(3, -5).
To find:
The vertices of the triangle after a reflection over x = -3 and plot the triangle and its image on the graph.
Solution:
If a figure reflected across the line x=a, then
The triangle after a reflection over x = -3. So, the rule of reflection is
The vertices of triangle after reflection are
Similarly,
And,
Therefore, the vertices of triangle after reflection over x=-3 are R'(-9,7), S'(-1,-2) and T'(-3,-5).
Answer:
(b) For each hour that Michelle drove, she traveled an additional 50 miles.
Step-by-step explanation:
Given
---- start
--- end
Required
Which is true
(a): Journey = 6 hours
This is false, because:
---- 7 hours
(b): The average rate is 50 miles per hour
To do this, we calculate the slope (m) using:
This means that the rate is 50 miles driven in 1 hour.
<em>(b) is correct</em>
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<em>Others are incorrect</em>