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madreJ [45]
3 years ago
11

5. For which linear function below does f(-1) = 9 and f(3) = 1?

Mathematics
1 answer:
Tju [1.3M]3 years ago
3 0
The answer is Y = -2X + 7
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Help meeeeeeweeeeeeee
Julli [10]
<h3>Answer:</h3>

A. y = (-6/5)x +10

<h3>Step-by-step explanation:</h3>

The given line has a negative slope (downward to the right). The only equation offered with a negative slope is the one of selection A.

_____

<em>Complete working</em>

A parallel line will have the same slope. If there are less-obvious choices to select from, you need to know the slope of the given line. That is computed from ...

... slope = (change in y)/(change in x)

The coordinates of two points are given, so we can find the slope as ...

... slope = (-4-2)/(-1-(-6)) = -6/5

There are a number of ways to write the equation of a line, but in slope-intercept form, the slope is the coefficient of x. You will be looking for a choice that has an x-coefficient of -6/5.

4 0
3 years ago
Emma needs to find the surface area of a triangular pyramid where the base and all three faces are congruent equilateral triangl
Alex17521 [72]

Answer:

73.19

Step-by-step explanation:

4 * (1/2)* (6.5) * (5.63)

4 0
3 years ago
The shipping cost for order at an online store is 1/10 the cost of the items you order. What is an expression for the total cost
Katen [24]

Answer:

B. $79 + 0.1($79)

Step-by-step explanation:

Given that;

the shipping cost for an order = 1/10 multiply by the cost of the items bought;

i.e.  \dfrac{1}{10}\times x

where

x = cost of items ordered for.

This implies that:

\implies x + 0.1x

The objective is to determine the expression for the total cost of an order which is $79

x = 79

Then,  the total cost of an order is

$79 + 0.1($79)

4 0
3 years ago
Simplify the following: <br> 2m x 8n
tresset_1 [31]

Answer:

16mn

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Each of ten tickets is marked with a different number from 1 to 10 and put in a box. if you draw a ticket from the box, what is
Softa [21]

Answer:

7/10

Step-by-step explanation:

take 3, 2, 1 from the equation and your left with 7 numbers. Add those together you get 10. 7/10 is the probability that you will draw a number greater than 3

4 0
2 years ago
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