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irinina [24]
2 years ago
9

What is the y-intercept of the line given by the equation y=4.2x - 6.3

Mathematics
2 answers:
iren2701 [21]2 years ago
7 0
-6.3, this is slope intercept form where it’s y=mx+b. M=slope of the line and b = the y intercept. You could also set x to 0.
Ipatiy [6.2K]2 years ago
4 0

Answer:

-6.3

Step-by-step explanation:

4.2x, if x = 0, then y = -6.3

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Create the f(x) function based on the table. Your answer should be in function notation. X f(x) - 10 -6 -9 -5 1-8 -4 -7 1-3 5 9​
Minchanka [31]

Answer:

f(x) = x + 4

Step-by-step explanation:

First create an equation in slope-intercept form, y = mx + b. To do this, find the rate of change or slope (m), and the y-intercept (b).

Using two pairs, (-7, -3) and (-8, -4),

slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{-4 -(-3)}{-8 -(-7)} = \frac{-1}{-1} = 1

m = 1

To find b, substitute m = 1, x = -7 and y = -3 into y = mx + b.

Thus:

-3 = (1)(-7) + b

-3 = -7 + b

-3 + 7 = b

4 = b

b = 4.

Replace y with f(x), m with 1 and b with 4 in y = mx + b.

The function would be:

f(x) = x + 4

6 0
3 years ago
All most done thanks for hanging in there
Ber [7]

Answer:

Angle CBE

Step-by-step explanation:

They share the same degree. Or are the same angle in a different place with a  different name.

7 0
3 years ago
Read 2 more answers
Use the triangles to write a congruence statement.
kondor19780726 [428]
Triangle ABC is congruent to triangle MNC by SSS, AAA or AA .....!!
8 0
3 years ago
I bought a car of 650,000 and<br>sold it for 520,000. Find the<br>lost Percent ?<br>​
Tom [10]

Answer:

20% decrease in value.

Step-by-step explanation:

Do 650,000 divided by 100 to find what 1% of the original price is:

650,000 divided by 100 = 6,500

To find what percentage of the original price 520,000 is, we divide it by 1% of the original cost (6,500):

520,000 divided by 6,500 = 80 (percent)

So if 520,000 is 80% of 650,000 the car has decreased in value by 20%.

7 0
3 years ago
In January 2015, the Pew Research Center reported results from one of their surveys. "Asked about whether vaccines for childhood
scZoUnD [109]

Considering the margin of error, it is found that the 95% confidence interval for the percentage of adults who say vaccines should be required is (64.9%, 71.1%).

<h3>What is a confidence interval?</h3>

It is given by the sample statistic plus/minus the margin of error.

In this problem, 68% of adults say such vaccines should be required, with a margin of error of 3.1%, hence:

68% - 3.1% = 64.9%.

68% + 3.1% = 71.1%.

The 95% confidence interval for the percentage of adults who say vaccines should be required is (64.9%, 71.1%).

More can be learned about confidence intervals at brainly.com/question/25890103

3 0
2 years ago
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