3 years ago

The sum of the ages of Martin and his son Sherwin is 47 years. Martin's age is 2 years more than 4 times the

Mathematics

1 answer:

aliina [53]3 years ago

7 0

Answer:

In the picture above it shows how to answer the questions step by step. If there's a mistake, pls inform me.

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#1 0.00123

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Step-by-step explanation:

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What is an equation in point-slope form of the line that passes through (-7.1) and (-3.9)?

forsale [732]

Answer:

$y-1=2(x+7)$

Step-by-step explanation:

Point-slope form: $y-y_1=m(x-x_1)$ where a given point is $(x_1,y_1)$ and the slope is $m$

1) Find the slope of the line (m)

Slope = $\frac{y_2-y_1}{x_2-x_1}$ where the given points are $(x_1,y_1)$ and $(x_2,y_2)$

Plug in the points (-7,1) and (-3,9)

$= \frac{9-1}{-3-(-7)}\\= \frac{8}{-3+7}\\= \frac{8}{4}\\= 2$

Therefore, the slope of the line is 2. Plug 2 into the equation as m:

$y-y_1=2(x-x_1)$

2) Plug one of the given points into the equation

We plan either plug in (-7,1) or (-3,9) and it would work either way. Below you can see the equation plugging in the point (-7,1):

$y-1=2(x-(-7))\\y-1=2(x+7)$

I hope this helps!

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If g=x-9 and if x=15what isg

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G = 15-9
g = 6

the answer is g =6

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1) D

2) C

Step-by-step explanation:

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