All categories

3 years ago

Y=x-7 Y=-4x-2 Solve by substitution help please

Mathematics

2 answers:

wlad13 [49]3 years ago

6 0

Answer:

(1, - 6 )

Step-by-step explanation:

Given the 2 equations

y = x - 7 → (1)

y = - 4x - 2 → (2)

Substitute y = x - 7 into (2)

x - 7 = - 4x - 2 ( add 4x to both sides )

5x - 7 = - 2 ( add 7 to both sides )

5x = 5 ( divide both sides by 5 )

x = 1

Substitute x = 1 into either of the 2 equations for corresponding value of y

Substituting x = 1 into (1)

y = 1 - 7 = - 6

Solution is (1, - 6 )

sergeinik [125]3 years ago

4 0

Answer:

6= 7-1

-14= -4·3-2

Step-by-step explanation:

You might be interested in

Please help me with precal

Doss [256]

Consider the function $f(x)=\sqrt{x}.$ This function has:

the domain $x\in [0,\infty);$
the range $y\in [0,\infty).$

If the domain of unknown function is $[a,\infty),$ then $x\ge a$ or $x-a\ge 0.$ This means that you have $\sqrt{x-a}$ as a part of needed function.

If the range of unknown function is $[b,\infty),$ then $y\ge b.$ This means that you have to translate function b units up and then the expression of the function is

$y=\sqrt{x-a}+b.$

Answer: correct choice is B.

6 0

3 years ago

Please help me with this question and please tell me how I would put this into a calculator please...

AnnyKZ [126]

Answer:

Step-by-step explanation:

$\frac{2}{3}x+4=\frac{2}{3} *\frac{3}{1}+4 = 2+4=6$

3 0

3 years ago

"m divided by 3" is the same as

KonstantinChe [14]

M/3
OR
the quotient of a number, m, and 3

hope this helps :)

6 0

3 years ago

Read 2 more answers

What is the value of y?

prohojiy [21]

Answer:

it is 108 because 180-72

8 0

3 years ago

May I please receive help?<br> Please?

ANEK [815]

$\huge\colorbox{red}T\colorbox{orange}h\colorbox{yellow}a\colorbox{green}n\colorbox{blue}k\colorbox{purple}s$

6 0

2 years ago

Read 2 more answers