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3 years ago

Someone help me with finding an x and y equation and then finding points and graphing them

Mathematics

1 answer:

snow_lady [41]3 years ago

7 0

Answer: main (79,1580) when start graphing start with (1,20)

Step-by-step explanation:

(x,y)

x is number of students which is 79 and

y is the cost which is 1580

so the answer is (79,1580)

79 students cost 1580

1 student cost 1580/79=20 $

so start with

(1,20)

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Three less than 2 times a number is 55. What is the number?

-Dominant- [34]

Let the number be x.

2x-3=55
2x=55-3
2x=52
x=52/2
x=26

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4 years ago

G(x)=4x-7 find g(-9)

FinnZ [79.3K]

Answer:

-43

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4 years ago

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What is the height of the trapezoid ? A) 3units B) 5units C) 10units D) 12units

zheka24 [161]

Answer:

b) 5

Step-by-step explanation:

6+10=16

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3 years ago

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What is an equation of the line that passes through the points (-6, -2) and

den301095 [7]

Answer:

The equation of line is: $\mathbf{4x-3y=-18}$

Step-by-step explanation:

We need to find an equation of the line that passes through the points (-6, -2) and (-3, 2)?

The equation of line in slope-intercept form is: $y=mx+b$

where m is slope and b is y-intercept.

We need to find slope and y-intercept.

Finding Slope

Slope can be found using formula: $Slope=\frac{y_2-y_1}{x_2-x_1}$

We have $x_1=-6,y_1=-2, x_2=-3, y_2=2$

Putting values and finding slope

$Slope=\frac{2-(-2)}{-3-(-6)}\\Slope=\frac{2+2}{-3+6} \\Slope=\frac{4}{3}$

So, we get slope: $m=\frac{4}{3}$

Finding y-intercept

Using point (-6,-2) and slope $m=\frac{4}{3}$ we can find y-intercept

$y=mx+b\\-2=\frac{4}{3}(-6)+b\\-2=4(-2)+b\\-2=-8+b\\b=-2+8\\b=6$

So, we get y-intercept b= 6

Equation of required line

The equation of required line having slope $m=\frac{4}{3}$ and y-intercept b = 6 is

$y=mx+b\\y=\frac{4}{3}x+6$

Now transforming in fully reduced form:

$y=\frac{4x+6*3}{3} \\y=\frac{4x+18}{3} \\3y=4x+18\\4x-3y=-18$

So, the equation of line is: $\mathbf{4x-3y=-18}$

6 0

3 years ago

How do you Factor this equation

algol [13]

Answer:

(x+4)(x+4)

Step-by-step explanation:

The middle number is 8 and the last number is 16. Factoring means we want something like (x+_)(x+_). We need two numbers that add together to get 8 and multiply together to get 16. The number 4 works perfectly in this equation. That's why (x+4)(x+4) is the factor of the equation x^2 + 8x + 16.

5 0

3 years ago