Question

Can someone please check the answer to my question? Please?
If 3x + 4y = 9, then x equals
a. 3-4y
b. 9-4y
c. 9+4y
3
d. 9-4y
3

Answer 1

D

Answer 2

dude dont blert out the answer

Answer 3

explain please :)

Answer 4

3x-4y = 7 is your line
We need its slope. Congruent slopes are PARALLEL. [Negative reciprocal slopes are PERPENDICULAR.]

(1) Convert to y=mx+b (slope intercept form) to find its slope.
3x-4y = 7
-4y = 7-3x [move over the 3x]
y = -(7/4) + (3/4)x [divide both sides by -4]
y = (3/4)x - (7/4) [rearrange]
WHAT IS THIS? IT IS A LINE WITH A SLOPE OF 3/4 AKA 0.75 AND A Y-INTERCEPT OF -(7/4)

(2) Your given line has a slope of 3/4 aka 0.75. Your PARALLEL line will ALSO have a slope of 3/4 aka 0.75

(3) Plug your point (x,y) which was (-4,-2) and your known slope (3/4) into y=mx+b to solve for b (y-intercept)
y = mx+b
-2 = (3/4)(-4) + b [Substitute]
-2 = -3 + b [multiply]
b = 1 [Add 3 to right and left sides to isolate b]

(4) REWRITE LINE WITH SLOPE (m) AND Y-INTERCEPT (b)
m = 3/4
b = 1
y = mx + b
y = (3/4)x + 1
y = 0.75x + 1 is also an acceptable answer

Answer 5

there is your answer

Answer 6

wow @silveralchemist09

Answer 7

subtract 4 from both side then divide each side by 3

Answer 8

thanks

Answer 9

It ask what is Y

Answer 10

@silveralchemist09
And THATS how its done! Good job! You explain very well!

Answer 11

your welcome

Answer 12

Thank you all for helping me!!

Answer 13

hey no problem

Answer 14

@silveralchemist09 thanks for supporting OS rules <3

Answer 15

youre welcome guys

Answer 16

silveralchemist just copied and pasted lol

Answer 17

but.he didnt' give the direct answer out like someof you._.

Answer 18

yah but i did the work i just saved it encase anyone else needs to use it

Answer 19

All i said was he copied and pasted, i told the guy to show the work too

Answer 20

ok thanks

Answer 21

Okay let's not exlode this..since we already got the answer with steps to it.

Answer 22

yah youre right bye

Answer 23

and thanks for medal