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3 years ago

14

[15 POINTS] Please help me!

2 answers:

steposvetlana [31]3 years ago

8 0

Answer:

1) y=2x+7 2) y=4 and y=3

Step-by-step explanation:

1) you start knowing that the slope-intercept equation is y=mx+b. M stands for your slope so you just plug 2 in for m. Then you plug in the x to see how to make it equal 1. As you look at it you realize that 2*-3 is -6 and you need to add 7 to get to one. Therefore the seven would be the B.

2) Since there is no slope the lines just go on the horizon at the y point of 4 or 3.

kari74 [83]3 years ago

5 0

Hello i don't know the answer

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on a certain hot Summer's Day 613 people use the public swimming pool the daily prices are $1.75 for children $2.25 for adults t

Elodia [21]

389 children and 224 adults were at the pool that day.

Step-by-step explanation:

Cost of one child ticket = $1.75

Cost of one adult ticket = $2.25

Total people = 613

Total receipts worth = $1184.75

Let,

Number of children = x

Number of adults = y

According to given statement;

x+y=613 Eqn 1

1.75x+2.25y=1184.75 Eqn 2

Multiplying Eqn 1 by 1.75

$1.75(x+y=613)\\1.75x+1.75y=1072.75\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(1.75x+2.25y)-(1.75x+1.75y)=1184.75-1072.75\\1.75x+2.25y-1.75x-1.75y=112.00\\0.50y=112.00$

Dividing both sides by 0.50

$\frac{0.50y}{0.50}=\frac{112.00}{0.50}\\y=224$

Putting y=224 in Eqn 1

$x+224=613\\x=613-224\\x=389\\$

389 children and 224 adults were at the pool that day.

Keywords: linear equation, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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