Simplify 4 square root of 2 end root plus 7 square root of 2 end root minus 3 square root of 2 . (1 point)
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If we write a line in the form
Then the coefficient m is the slope of the line.
Two lines and
are:
- Parallel if
- Perpendicular if
The first line is already in the required form: . We deduce that its slope is 9.
Let's rewrite the second line in the required form:
So, its slope is -1/9.
9 and -1/9 are obviously not equal, so the lines are not parallel.
But their product is -1, which means that the lines are perpendicular.