The first line equation: y = -2/7x - 5; m1 = -7/2
The second line passes through (2,4) and is perpendicular to the first line.
Therefore,
The gradient of first line = -1/m1 = -1/(-2/7) = 7/2
Then, the equation of the second line is;
y = 7/2x+b
Substituting for the coordinates given;
4 = 7/2(2)+b
4 = 7+b
b = 4-7 = -3
Therefore, the equation of the second line is;
y = 7/2x - 3
In standard form, the equation this equation can be written as:
y(2) = 7x - 3(2)
2y = 7x - 6
7x -2y - 6 = 0 -----> standard form.
Step-by-step explanation:
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Answer:
1. $30
2. $47.50
3. $7.20
Step-by-step explanation:
1. ( 30 + 45 + 15 ) / 3 = 30
2. ( 18 + 93 + 34 + 45 ) / 4 = 47.50
3. ( 9 + 4 + 5 + 8 + 10 ) = 7.20
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