Question

Write an appropriate direct variation equation if y = 14 when x = -14

Answer 1

@mathstudent55

Answer 2

same as before, sorta

direct variation means y = (SOME NUMBER) x
what's that number? we dunno

but we know that when x = -14, y = 14

so
14 = (SOME NUMBER) (-14)

solve for "SOME NUMBER"

Answer 3

so is it 14*-14?

Answer 4

well, you'd divide both sides, no multiply to isolate "SOME NUMBER"

Answer 5

A. y = 14x
B. y = -14x
C. y = x
D. y = -x

Answer 6

so which one?

Answer 7

what did you get for "SOME NUMBER"?

Answer 8

dont get it

Answer 9

\(\bf y = (\textit{some number})x \implies 14 = (\textit{some number})(-14)\)

Answer 10

so is it -x?

Answer 11

if you had
14 = -14n
what would you get for "n"?

Answer 12

i dont know i just need help which one

Answer 13

@jim_thompson5910

Answer 14

y=x times -1

Answer 15

so -x?

Answer 16

A. y = 14x B. y = -14x C. y = x D. y = -x

Answer 17

y = -x is correct