Quiz about Ecuaciones de la recta (4º ESO)

Question 1

El vector director de la recta $$r:\ 3x-2y+4=0$$ es

Accepted Answer

$$\overrightarrow{d}=\left(2,\ 3\right)$$

Answer

$$\overrightarrow{d}=\left(3,\ -2\right)$$

Answer

$$\overrightarrow{d}=\left(-2,\ 3\right)$$

Answer

$$\overrightarrow{d}=\left(-2,\ 4\right)$$

Question 2

La pendiente de la recta $$y=5-3x$$ es

Accepted Answer

Answer

Answer

$$m=-\frac{5}{3}$$

Answer

$$m=-\frac{3}{5}$$

Question 3

El vector normal de la recta $$\frac{x-3}{2}=\frac{y+5}{-1}$$ es

Accepted Answer

$$\overrightarrow{n}=\left(1,\ 2\right)$$

Answer

$$\overrightarrow{n}=\left(2,\ -1\right)$$

Answer

$$\overrightarrow{n}=\left(3,\ -5\right)$$

Answer

$$\overrightarrow{n}=\left(-3,\ 5\right)$$

Question 4

En la recta $$2x-4y+5=0$$

Accepted Answer

Todas son correctas

Answer

$$\overrightarrow{d}=\left(2,\ 1\right)$$

Answer

$$\overrightarrow{n}=\left(-2,\ 4\right)$$

Answer

$$m=\frac{1}{2}$$

Question 5

Un vector director de la recta $$y=-3x+2$$ es

Accepted Answer

$$\overrightarrow{d}=\left(-3,\ 9\right)$$

Answer

$$\overrightarrow{d}=\left(-3,\ 2\right)$$

Answer

$$\overrightarrow{d}=\left(2,\ 3\right)$$

Answer

$$\overrightarrow{d}=\left(-6,\ 2\right)$$

Question 6

Un vector normal de la recta $$-2x+5y-7=0$$ es

Accepted Answer

$$\overrightarrow{n}=\left(4,\ -10\right)$$

Answer

$$\overrightarrow{n}=\left(5,\ 2\right)$$

Answer

$$\overrightarrow{n}=\left(5,\ -7\right)$$

Answer

$$\overrightarrow{n}=\left(2,\ 7\right)$$

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