Lección 9 ¿Y cuál es el punto? Consolido lo que aprendí

Prepárate

Determina la solución de cada sistema de ecuaciones lineales.

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Graph of two lines on the same coordinate plane, intersecting at (1, 2)x–10–10–10–5–5–5555101010y–10–10–10–5–5–5555101010000

4.

Graph of two lines on the same coordinate plane, intersecting at (-2, -4)x–10–10–10–5–5–5555101010y–10–10–10–5–5–5555101010000

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Alístate

Soluciona cada sistema de ecuaciones usando álgebra. Verifica tu solución.

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Se corta una tubería de yardas para drenar dos campos. Si la longitud de una parte es tres yardas menos que el doble de la longitud de la otra parte , ¿cuáles son las longitudes de las dos partes?

¡Vamos!

Para cada gráfica, determina si la relación representa una función. Si es una función, escribe y explica por qué. Si no es una función, escribe no y explica por qué no lo es.

13.

Graph of a continuous curve, beginning at (-9, -3), curving up and to the right to (-1, 4), where it begins to curve down to (7, 0.5), where it begins to curve up to its endpoint at (10, 5).x–10–10–10–5–5–5555101010y–5–5–5555101010000

14.

Graph of a point and two connecting line segments. The point is (-3, 4). The first line segment begins at (-9, 11) and descends to (-2, -3), where the second segment begins and ascends to (5, 11).x–10–10–10–5–5–5555y–5–5–5555101010000

15.

Graph of 5 plotted points that descend in a curve to the right. Points are approximately (0.3, 3), (1, 2), (2, 1), (3, 0.5), (4, 0.2)x111222333444555y111222333444555000

16.

a parabola on its side on a coordinate plane, opening to the right x555101010151515y–5–5–5555000

17.

A graph with closed point at (0, 10) descending in a curve to a closed point at (6, 4). the graph begins again at an open endpoint at (6, 4), curves up to (8, 9), then down to (18, -2) and then curves up to a closed endpoint at (21, 0)x555101010151515202020y555101010000

18.

A continuous curve beginning at (-4, 11), descending in a slight curve to (-2, 0), then curving up to (0, 4), then curving down to (2, 0), then curving slightly up to (4, 11)x–5–5–5555y555101010000