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4 years ago

What is the point slope form of a line that has a slope of 3 and passes through the point (-1,4)

Mathematics

1 answer:

lukranit [14]4 years ago

6 0

Answer:

y - 4 = 3(x- (-1) ---> y-4 = 3(x+1)

Step-by-step explanation:

y - 4 = 3(x + 1)

y - 4 = 3x + 3

y = 3x + 7

then plug in (-1,4)

4 = 3(-1) + 7

4 = -3 + 7

4 = 4

Point slope form looks like:

y - y₁ = m(x - x₁)

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It took 48 minutes to drive downtown An app estimated it would be less than that If the error was 20% what was the apps estimate

Zina [86]

Answer:

The app's estimate was 38.4 minutes.

Step-by-step explanation:

Suppose, the app's estimated time was $t$ minutes.

Given that, it took 48 minutes to drive downtown. So, the error in estimated time by the app $=(48-t)$ minutes.

It is also given that the error was 20%. So, the amount of error $= (48*0.20)=9.6$ minutes.

Thus, the equation will be......

$48-t= 9.6\\ \\ -t=9.6-48\\ \\ -t=-38.4\\ \\ t= 38.4$

So, the app's estimate was 38.4 minutes.

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4 years ago

Which of the numbers 285, 629, 5490, 7392, 15708, 43695 are divisible by 3 but not by 9.

I am Lyosha [343]

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3 years ago

Read 2 more answers

Write a system of equations for (4,-3)

qaws [65]

y = 4x - 3 would be it !!!!

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3 years ago