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azamat
3 years ago
5

Which ordered pair is not a solution of the equation y = 2x – 1

Mathematics
2 answers:
Nikitich [7]3 years ago
8 0
Answer: H

Explanation:

The format is (x,y) ; (4,9) Therefore, you plug in 4 for x then 9 for y. Which will give you “9=2(4)-1” and then simplify, which will give you.. “9=8-1 AKA 9=7” which is not accurate. Therefore that is NOT a solution to the equation...

STEP-BY-STEP:

y = 2x - 1

9 = 2(4) - 1

9 = 8 - 1

9 = 7

^^^^ NOT TRUE

So, therefore the answer IS H (4,9) because it’s asking what is NOT a solution.
TEA [102]3 years ago
3 0

Answer:

H

Step-by-step explanation:

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1) f(x) = - x2 + 4x - 10<br> Find f(5)
Natali5045456 [20]
Substitute the x with 5
-(5)2 + 4(5) - 10 = 0
3 0
2 years ago
Passes through the point (0,6) and has a slope of -2/3
Vadim26 [7]

Answer:

y=-\frac{2}{3}x + 6

Step-by-step explanation:

We are given that a line has a slope of -2/3 and passes through the point (0,6)

We want to write the equation of this line; there are 3 forms of the line that we can use:

  • Slope-intercept form, which is y=mx+b, where m is the slope and b is the y intercept
  • Standard form, which is ax+by=c, where a, b, and c are free integer coefficients, but a and b cannot be 0, and a cannot be negative
  • Slope-point form, which is y-y_1=m(x-x_1), where m is the slope and (x_1, y_1) is a point

All though while writing the equation of the line in any of these ways is acceptable, the most common way is to write it in slope-intercept form, so let's do it that way.

As we are already given the slope, we can immediately substitute m with that value.

Replace m with -2/3:

y = -2/3x + b

Now we need to find b.

As the equation passes through the point (0, 6), we can use it to help solve for b.

Substitute 0 as x and 6 as y.

6 = -2/3(0) + b

Multiply

6 = 0 + b

Add

6 = b

Substitute 6 as b.

y = -2/3x + 6

Topic: finding the equation of the line

See more: brainly.com/question/27645158

8 0
1 year ago
The radius of a semicircle is 3 kilometres. What is the semicircle's perimeter?
alina1380 [7]

Answer:

In terms of Pi: 3\pi + 6 km

Exact value (rounded): 15.42477 km

Approximated (3.14): 15.42 km

Step-by-step explanation:

Hello!

A semicircle's perimeter can be found using the formula: P = \pi r + 2r

We can plug in the values to solve for the perimeter.

<h3>Solve</h3>
  • P = \pi r + 2r
  • P = \pi(3)+ 2(3)
  • P = 3\pi + 6

In terms of Pi, it is 3\pi + 6,

Exact value of Pi, it is 15.42477

Approximation of Pi (3.14), it is = 15.42

6 0
1 year ago
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