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Nat2105 [25]
2 years ago
13

Help I need a equation

Mathematics
1 answer:
yarga [219]2 years ago
5 0

9514 1404 393

Answer:

  a) y = 3x-1

  b) y = x+5

Step-by-step explanation:

a) We notice the x-values change by 1, so the change in the y-value is the slope. -4 -(-7) = 3 is the change between the first two y-values.

The y-intercept is shown by the ordered pair (0, -1). So, the slope-intercept equation is ...

  y = 3x -1

__

b) We note that the change in x is 2 units, as is the change in y. Then the slope of the function is m = 2/2 = 1. The y-intercept (b) can be found from ...

  b = y -mx

  b = 7 -1·2 = 5

Then the slope-intercept equation is ...

  y = x + 5

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Which situation could best be represented by the integer 120
ASHA 777 [7]
Which situation could best be represented by the integer 120?

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2. this number would be positive

3. could be between -1 to - infinity

answer: 3. the number of feet below a surface
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2 years ago
State whether the graph would be a circle, ellipse, parabola, or hyperbola.
Lubov Fominskaja [6]

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ellipse

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bc you should already know

7 0
3 years ago
A 12 ft ladder leans against the side of a house. The top of the ladder is 10ft off the ground. Find x, the angle of elevation o
attashe74 [19]

The image is missing, so i have attached it.

Answer:

x = 56.44°

Step-by-step explanation:

From the attached image, we can see that this is a right angle triangle which has opposite, adjacent and hypotenuse as sides. Since we want to find the angle x, thus, we can make use of trigonometric ratios.

From the attached image, the side opposite to angle x is 10ft and the hypotenuse is 12 ft.

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So, sin x = 10/12

x = sin^(-1) (10/12)

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x = 56.44°

6 0
3 years ago
Type the expression that results from the following series of steps:
Sati [7]

Answer:

Step-by-step explanation:

Given

x times by 9

Required

Write out an algebraic expression for the above.

Follow the instructions below to get the algebraic expression of the above.

1. First, write out the variable: x

2. Then write out an expression for "times by 9". This means multiply x by 9.

So, this gives x * 9.

x * 9 = 9x.

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5 0
3 years ago
annual sales for a company are $149,999 and are increasing at a rate of 6% per year. write an exponential growth function to mod
elixir [45]

Answer:

  • S(t) = 149999(1.06)^t
  • $225543

Step-by-step explanation:

  • Initial value is $149999
  • Increase rate is 6% per year = 1.06 times

<u>The model of the growth is:</u>

  • S(t) = 149999(1.06)^t, where S- amount of annual sales, t- time in years, 1.06- growth rate per year

<u>Annual sales after 7 years:</u>

  • S(7) = 149999(1.06)^7 = $225543
4 0
3 years ago
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