3 years ago

Please help on all three of these

Mathematics

1 answer:

Maslowich3 years ago

3 0

Answer:

$2) \: y = - 3x + 5 \\ 3) \: y = \frac{1}{4}x - 2$

Step-by-step explanation:

Remmeber:

$slope = \frac{rise}{run}$

I am unsure how to do number 4.

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Em uma oficina mecânica, 3 funcionários conseguem arrumar, em média, 5 veículos a cada 5 horas. Em época de final de ano, a dema

KATRIN_1 [288]

Answer:

Step-by-step explanation:

Vc é BR ent deve entender

se 1 funcionário em 1h consegue fazer 1/3 do carro

3 em 1h consegue 1 carro

5 em 1h consegue 1,6 carros

ent é 5

6 0

3 years ago

the graph of the function f(x) = ax^2 + bx + c (where a, b, and c are real and non zero) has two x- intercepts. explain how to f

Dovator [93]

The vertex of the parabola is given by :

$\displaystyle{ ( \frac{-b}{2a}, f(\frac{-b}{2a}) )$ .

So, $\displaystyle{ \frac{-b}{2a}$ is the first coordinate of the vertex, which means it is also the point where the line of symmetry passes.

The line of symmetry divides the parabola into 2 symmetrical parts: the x-intercepts are also symmetrical to each other with respect to this line.

So, if one of the x-intercepts is $\displaystyle{ (\frac{-b}{2a}+3, 0)$ , that is 3 units to the right of the x-intercept, the other must be 3 units to the left. Thus, the second x-intercept is :

Answer: $\displaystyle{ (\frac{-b}{2a}-3, 0)$ ,