Question

Let c be any constant number. Which of the following will always be perpendicular to −3x + y = −1?

y = 1/3x + c

y= -1/3x+c

y = -3x+c

y=3x+c

Answer 1

parallel lines have the same slope

perpendicular lines's slopes multiply to give -1

Answer 2

can you rearrange the equation to find the gradient?

Answer 3

i need help please

Answer 4

get your formula into this form

y=mx+b

Answer 5

k thanks :)

Answer 6

\[ −3x + y = −1\]
add three x to both sides

Answer 7

what do You get?