Question

Please help!



Select the pair of equations whose graphs are perpendicular.

A.
y = 2x – 7
x + 2y = 3

B.
x + 6y = 8
y = 2x – 8

C.
2y = –3x + 5
2x + 3y = 4

D.
5x – 8y = 9
12x – 5y = 7

Answer 1

find the slopes of each pair. if the slopes of the line multiply to give -1 then those lines are perpendicular

Answer 2

The answer?

Answer 3

another way is to put the lines into standard form (ax + by = c). then multiply the x coefficients and add that to the product of the y coefficients. If you get 0 then the lines are pependicular.

Answer 4

so which one

Answer 5

\[\begin{matrix}y=2x-7 \\ x+2y=3\end{matrix} \Rightarrow \begin{matrix}-2x+y=-7 \\ x+2y=3\end{matrix} \Rightarrow (-2)(1)+(1)(2)=0 \Rightarrow \perp\]

Answer 6

a,b,c,or d

Answer 7

a right?

Answer 8

Are you here for answers, to learn or both?

Answer 9

both

Answer 10

just tring to make sure if its right cause I just learned how to solve it so

Answer 11

So how did solve?