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mr Goodwill [35]
3 years ago
13

How do you write and equation of a linear function using two points

Mathematics
1 answer:
Margaret [11]3 years ago
8 0

Answer:

Step-by-step explanation:

Find the difference between the 2 points.

For example, (8, 9) (5, 3).

Compare the difference between the x's, in this case 8 and 5. The difference is 3. Do the same with the y's, 9 and 3. The difference is 6.

To find the slope, it's y/x. The slope in this situation is 6/3. Simplify. The slope is 2.

To find the y-intercept, insert the slope and one of the 2 points in the beginning into y = mx + b & solve for b.

For example, if we use the ordered pair (5, 3) the equation would look like:

3 = 2(5) + b, Solve for b.

Multiply. 3 = 10 + b

Get b by itself by adding - 10 to both sides.

-7 = b

The y-intercept is -7. So, in this case, the equation is y = 2x - 7.

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Answer:

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Step-by-step explanation:

Put 8 where n is and do the arithmetic.

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4 0
2 years ago
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kolbaska11 [484]

Answer:

The answer is D,  g(x)=-2^x

Step-by-step explanation:

By graphing each one in a graphing tool like Desmos, you can determine which one it is.

If your looking for an actual explanation on how it is found, I can't really help you on that one.

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larisa86 [58]
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2 years ago
Linear equations assignment:
Daniel [21]

Answer:

20 laps

Step-by-step explanation:

2 times = +1 dollars for Paula, +0.50 dollars for Jacki

Try multiplying it the least amount of times to Paula can have more and so 20 times and Paula will have 20 dollar sand Jacki will have 19.75, therefore she needs to do 20 laps.

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2 years ago
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