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3 years ago

Which is a graph of the equation y = 2x- 4

Mathematics

2 answers:

algol133 years ago

7 0

The first one because the slope is 2/1 and y-intercept is -4

yanalaym [24]3 years ago

5 0

Answer:

Option A is the correct choice.

Step-by-step explanation:

Please find the attachment.

We have been given an equation $y=2x-4$ and we are asked to find the graph that represents our given equation.

We can see that our given equation is slope-intercept form of equation $y=mx+b$ , where,

m = Slope of line,

b = The y-intercept or initial value.

So, the graph for our given equation will have a slope of 2 and it will y-axis at y=-4.

Upon looking at our given options we can see that graph represented by option A has a slope of 2.

$Slope=\frac{y_2-y_1}{x_2-x_1}$

Upon substituting coordinates of points (2,0) and (3,3) in slope formula we will get,

$Slope=\frac{2-0}{3-2}$

$Slope=\frac{2}{1}$

$Slope=2$

Therefore, the graph represented by option A is the correct choice.

You might be interested in

Y is inversely proportional to x.

Inessa [10]

Answer:

1. $xy = 63$

2. $y = 3$

Step-by-step explanation:

Given

Variation: inverse Proportion

y = 7, x = 9

Required

- Write an equation connecting y and x

- Find y when x = 21

Given that thee variation is inversely proportional;

This implies that

$y\ \alpha\ \frac{1}{x}$

Convert variation to equation

$y\ = \frac{k}{x}$ ----------- Equation 1

Where k is the constant of variation

Substitute 7 for y and 9 for x in equation 1

$7 = \frac{k}{9}$

Multiply both sides by 9

$9 * 7 = 9 * \frac{k}{9}$

$63 = k$

Substitute 63 for k in equation 1

$y = \frac{63}{x}$

Multiply both sides by x

$x * y = \frac{63}{x} * x$

$xy = 63$

Hence, the equation connecting x and y is $xy = 63$

Solving for when x = 21

Substitute 21 for x in the above equation

$21 * y = 63$

Divide both sides by 21

$\frac{21 * y}{21} = \frac{63}{21}$

$y = 3$

4 0

3 years ago

Can someone help me please ASAP

zmey [24]

Answer:

solution,

Let <DEF= x°

<CDE= 2x°

<BAF= 90°

The sum of interior angle of hexagon= 720°

<A + <B + <C + <D + <E +<F = 720°

$90 + 145 + 115 + 2x + x + 160 = 720 \\ 510 + 3x = 720 \\3x + 510 = 720 \\ 3x + 510 - 510 = 720 - 510 \\ 3x = 210 \\ \frac{3x}{x} = \frac{210}{3} \\ x = 70 \: degree$

Again,

$< \: cde = 2x \\ \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 70 \\ \: \: \: \: \: \: \: \: \: \: \: \: = 140 \: degree$

Hope this helps...

Good luck on your assignment..

4 0

3 years ago

plz help. The amount of pages in a 3rd graders book can be modeled by f(x) = x^2 + 6x where x represents the number of chapters.

posledela

Answer:

we can just plug values in and get x = 9

hope this helps and brainliest please

6 0

3 years ago

I definitely need help, big time. What's the step by step solution to this math problem -(80/-10)^2?

mojhsa [17]

The final answer is -64

6 0

3 years ago

Read 2 more answers

Write an<br> explicit formula for<br> then<br> th<br> an.<br> term of the sequence 45, 15,5. ....

7nadin3 [17]

Answer:

The sequence above is a geometric sequence

For an nth in a geometric sequence

$u(n) = a {r}^{n - 1}$

where n is the number of terms

a is the first term

r is the common ratio

From the question

a = 45

r = 15 / 45

The explicit formula for the sequence is

U(n) = 45(1/3)^n-1

Hope this helps you

7 0

3 years ago