Question

MEDAL TO WHOEVER ANSWERS (5 questions)
Unit 2 test review, due today.

Tell whether the given number is a solution of each equation.
4. 5-3x=11;x=-2 5.x/2-5=3;x=16

Tell wheather the orderd pair is a solution to the given number
6. y=-2 ; (5,-10) 7. y=3x+9 ; (1,12)

8.Charlie is 4 years older than his sister Sally. Let x represent Charlies age and y represent Sallys age. Create an equation and a graph to represent the relationship

Answer 1

\[ 5-3x=11;x=-2\] replace \(x\) by \(-2\) and see if you get \(11\), i.e. compute
\[2-3\times (-2)\]
if it is \(11\) then "yes" if it is not \(11\) then "no"

Answer 2

this is easy. All you do is plug in the num,bers and see if they work. (4-7)
If they don't then they are not a solution, if they do, then they are.
For 8,
x = Charlie
y= sally
x = y + 4
--> y = -x + 4

Answer 3

hello \(\large \begin{array}l\color{red}{\normalsize\text{S}}\color{orange}{\normalsize\text{A}}\color{#9c9a2e}{\normalsize\text{I}}\color{green}{\normalsize\text{F}}\color{blue}{\normalsize\text{O}}\color{purple}{\normalsize\text{O}}\color{purple}{\normalsize\text{O}}\color{red}{\normalsize\text{O}}\color{orange}{\normalsize\text{O}}\color{#9c9a2e}{\normalsize\text{O}}\color{green}{\normalsize\text{!}}\color{blue}{\normalsize\text{!}}\color{purple}{\normalsize\text{}}\end{array}\)

Answer 4

thanks i only understand 8 though. if yu can answer the rest, thatd be pretty cool

Answer 5

Okay @prettyfeather here is the solution to #4. Hopefully it helps with the rest.
Tell whether the given number is a solution of each equation.
4. 5-3x=11;x=-2
Plug in -2 into the equation as x to find whether it makes the equation true.
5 - 3x = 11
5 - 3(-2) =11
5 + 6 = 11
True
So, yes, x=-2 is a solution of the equation.
Hope this helps. :)

Answer 6

hm...don't know why it typed "feather". I put @prettyfeather

Answer 7

odd...it did it again...