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please help pre cal ​

Please Help Pre Cal class=

Sagot :

Answer:

1. A.

2. B

3. A

4. C

5. A

Step-by-step explanation:

1. (5-2)² + (2-(-2))² = distance

sqrt(34) = distance

2. (4-(-1))/(5-2) = slope

5/3 = slope

3. (5+2/2, 4+-1/2) = midpoint

(7/2, 3/2)

4. Just turn the y-axis into negative. So, (x, -y)

5. Reorganize and simplify the whole equation, so that we are left with the y variable in either one of the sides.

2x -7y + 9 = 0

2x - 7y = -9

-7y = -2x -9

y = 2/7x + 9/7

SIF: y =mx + b

Thus, m = 2/7