3 years ago

PLS HELP THIS IS HARD ANYONE PLS

Mathematics

1 answer:

drek231 [11]3 years ago

8 0

I think it’s B (0, 0) (5, -3), (4, 1).

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Consider the following set of equations:

Anna007 [38]

1.
$-3y=-3x-9 \\
y=x+3 \\ \\
\hbox{substitute x+3 for y in the first equation:} \\
-3(x+3)=-3x-9 \\
-3x-9=-3x-9 \\
-3x+3x=-9+9 \\
0=0 \\
always \ true \\ \\
\boxed{\hbox{infinitely many solutions}} \Rightarrow "infinite \ solutions"$

2.
$y=x+4 \\
y=3x+6 \\ \\
y=y \\
\boxed{x+4=3x+6} \Leftarrow \hbox{the step} \\
x-3x=6-4 \\
-2x=2 \\
x=\frac{2}{-2} \\
x=-1 \\ \\
y=x+4 \\
y=-1+4 \\
y=3 \\ \\
(x,y)=(-1,3)$

3 0

4 years ago

Read 2 more answers

12. How many students scored at least 60 on the test?<br> a) 3<br> b) 4<br> c) 11<br> d) 7

Troyanec [42]

4
i don’t have an explanation

7 0

4 years ago

I added a photo. help! lol

serg [7]

Answer:

19) 17+5