8. Solve x/10 = –7. A. x = –0.7 B. x= –17 C. x = –70 D. x = 3

1 answer:

4 0

For this problem, I believe you would just have to plug in for x.

For example, -17 divided by 10 and so on.

The answer should be C, -70. -70 divided by 10 equals -7.

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Which vector matrix represents the reflection of the vector <-1,5> across the line x = y

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Answer:

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We want to reflect this 2x1 vector on the line y = x.

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$\left[\begin{array}{ccc}-1\\5\end{array}\right]x\left[\begin{array}{ccc}0&1\\1&0\end{array}\right]\\\\\\\left[\begin{array}{ccc}-1(0) +5(1)&-1(1)+5(0)\end{array}\right]\\\\\\\left[\begin{array}{ccc}5&-1\end{array}\right]$