Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7 a) y=5x+53 b) y=-1/5x-7 c) y=-1/5x+1 d) y=1/5x+5

  c)  y = -1/5x+1

Step-by-step explanation:

The x-coefficient is the slope of the given line: 5.

The slope of the desired line is the negative reciprocal of that: -1/5. This will be the x-coefficient of the answer, eliminating choices (a) and (d).

Putting the given values of x and y into the remaining answer choices, we see ...

  3 ≠ -1/5(-10) -7 = -5 . . . . . (b) is not the answer

  3 = (-1/5)(-10) +1 = 3 . . . . (c) is the answer

point a is the center of this circle.

the ratio of the lengths of (ef/bc) and (ad/ih) is 2: 1.

step-by-step explanation:

b

step-by-step explanation: