3 years ago

I need help with problems 9-14

Mathematics

1 answer:

weqwewe [10]3 years ago

3 0

What are problems 9-14 if you send a picture of the problems I can help you

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Find the value of "a" such that the slope between the point (-4, 5) and (3, a) is 2/3.

timurjin [86]

$A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\the\ slope:m=\dfrac{y_B-y_A}{x_B-x_A}$

$(-4;\ 5);\ (3;\ a);\ m=\dfrac{2}{3}\\\\subtitute:\\\\\dfrac{a-5}{3-(-4)}=\dfrac{2}{3}\\\\\dfrac{a-5}{7}=\dfrac{2}{3}\ \ \ \ \ |cross\ multiply\\\\3(a-5)=7\cdot2\\\\3a-15=14\ \ \\ |add\ 15\ to\ both\ sides\\\\3a=29\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\boxed{a=\frac{29}{3}}$

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4 years ago

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Y_Kistochka [10]

Answer:

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so its -7a+2b

Step-by-step explanation:

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3 years ago

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Please help me it's urgent!

Crank

Answer:

y = 2x-5

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Step-by-step explanation:

Just need to solve the:

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y-2x=-5

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x=3

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the answer is A
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