4 Of 100 random students surveyed, 42 own a dog, 34 own a cat, 15 own
a dog and a cat, and 9 own neither a
dog nor a cat. Based upon the results,
how many of the next 20 students
surveyed would you expect to own a
dog and a cat?

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6