3.which equation is equivalent to x + 3y – z = 3? 3x + 6y – 3z = 6 2x + 4y – 2z = 8 4x + 12y – 4z = 12 2x + 3y – 4z = 12 4.which of the following points lies in the plane 3x – 2y + 4z = –12? (2,–2, 3) (5, 15, 2) (4, 16, 2) (–4, 3,–2)

3. Which equation is equivalent to

Now multiply both the sides by 4 we get

4.

We need to find the point which satisfies the given equation

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

answ5

step-by-step explanation:

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