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2 years ago

PLEASE ANSWER ASAP!!!! (and actually answer the question, no begging for "brainliest")

Mathematics

2 answers:

Ksivusya [100]2 years ago

8 0

∑ Hey, hughesbillyrobert ⊃

Answer:

y = 0.75x + 9

Step-by-step explanation:

Given:

A mother gives birth to a 9 pound baby. Every 4 months, the baby gains 3 pounds. If x is the age of the baby in months, then y is the weight of the baby in pounds. Find an equation of a line in the form y = mx + b that describes the baby's weight.

y = ________________

Solve:

For the equation of the line of the form y = mx + b:

'm' which is the slope of the line

' b' which is the y-intercept and that is the value of y when x is equal to zero.

The slope is the rate of change of y per change in x.

"y" would represent the dependent variable which is the weight of the baby and "x" represents the independent variable which is the number of months or the age of the baby in months.

At birth represents the beginning of time for the baby. Lets call this month zero. Hence,

x = 0 y = 9 ⇒ at birth

x = 4 y = 12

x = 8 y = 15

x = 12 y = 18

Now we find the slope between each point. Since the common difference of y is 3 and the common difference in x is 4, the slope will be

Slope = y/x = 3/4

Therefore, the equation of the line that represents this relationship is

y = (3 / 4)x + 9

y = 0.75x + 9

xcookiex12

8/24/2022

rosijanka [135]2 years ago

3 0

Answer: .75x + 9

Step-by-step explanation:

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What is the slope-intercept form for each equation in this system? Compare the slopes and y-intercepts to describe the graph of

Yuliya22 [10]

Answer:

We can compare slopes and y-intercepts. The first equation has m=3/4 and b=7. The second has m=-2/5 and b=2. They are intersecting lines.

Step-by-step explanation:

These equations are in the standard form of a line. We can convert to the slope-intercept by solving for y.

$3x-4y=28\\-4y=28-3x\\\frac{-4y}{-4} =\frac{28-3x}{-4} \\$

$y=-7+ \frac{3}{4} x$

We can now convert the second equation.

$4x+10y=20\\10y=20-4x\\\frac{10y}{10}=\frac{20-4x}{10}$

$y=2-\frac{4}{10}x$

$y=2-\frac{2}{5}x$

We can compare slopes and y-intercepts. The first equation has m=3/4 and b=7. The second has m=-2/5 and b=2. They are intersecting lines. This eliminates A and B. The answer based on the information given is likely D.

5 0

3 years ago

A rectangle with a length of 2 w and width of w. An equilateral triangle with side lengths of w + 8. The perimeters of a rectang

Mkey [24]

Answer:

rectangles perimeter: 6w

equilateral triangles perimeter: 3w+24

scenario’s equation: 6w=3w+24

Step-by-step explanation:

w=8

rectangles perimeter= 48

EQUTRI perimeter= 48