I can graph the solutions of an inequality on a number line.Puedo graficar las soluciones de una desigualdad en una recta numérica.
MissionMisión · Reef RescueRescate del arrecife
Protect the coral, one calculation at a time.Protege el coral, un cálculo a la vez.
Welcome to Reef Rescue. Every tank, dive and temperature reading has a limit, and the coral only thrives when we stay on the right side of it. Graph each inequality and test your values.
Te damos la bienvenida a Rescate del arrecife. Cada acuario, inmersión y lectura de temperatura tiene un límite, y el coral solo prospera si nos quedamos del lado correcto. Representa cada desigualdad y prueba tus valores.
Word bankBanco de palabras 4 words4 palabrassolution set, open circle, closed circle, …conjunto solución, círculo abierto, círculo cerrado, …
- solution setconjunto solución
- All the numbers that make an inequality true.Todos los números que hacen verdadera una desigualdad.
- open circlecírculo abierto
- An empty circle on a number line. It shows the boundary number is NOT a solution.Un círculo vacío en una recta numérica. Muestra que el número límite NO es una solución.
- closed circlecírculo cerrado
- A filled-in circle on a number line. It shows the boundary number IS a solution.Un círculo relleno en una recta numérica. Muestra que el número límite SÍ es una solución.
- boundary pointpunto límite
- The number on the number line where the solution set starts.El número de la recta numérica donde empieza el conjunto solución.
Stage 1 of 5Etapa 1 de 5
Get ReadyPrepárate
Wake up what you know, then explore today's model.
Activa lo que sabes y luego explora el modelo de hoy.
- On paper, graph x < 7 and x ≤ 7 on two number lines. Predict how the graphs differ. Then test the numbers 7 and 6.5 in both inequalities. Write what each circle tells you and how many solutions each inequality has.
- Which inequality represents: 'You must be at least 48 inches tall to ride'?
- h > 48
- h ≥ 48
- h < 48
- h ≤ 48
- Which inequality represents: 'A store can hold no more than 75 people'?
- p < 75
- p ≥ 75
- p ≤ 75
- p > 75
- Which inequality represents: 'The speed limit is more than 25 mph'?
- s ≥ 25
- s < 25
- s > 25
- s = 25
- 1 fresh problem with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Try ItInténtalo
Use the hints when you need them. Every wrong answer tells you why.
Usa las pistas cuando las necesites. Cada respuesta incorrecta te dice por qué.
- Which graph represents x < 5?
- Open circle at 5, shaded left
- Closed circle at 5, shaded left
- Open circle at 5, shaded right
- Closed circle at 5, shaded right
- Which graph represents x ≥ 3?
- Closed circle at 3, shaded right
- Open circle at 3, shaded right
- Closed circle at 3, shaded left
- Open circle at 3, shaded left
- Which graph represents x > 8?
- Open circle at 8, shaded right
- Closed circle at 8, shaded right
- Open circle at 8, shaded left
- Closed circle at 8, shaded left
Stage 3 of 5Etapa 3 de 5
On Your OwnPor tu cuenta
Tables, mistakes to find, and problems with a few steps.
Tablas, errores por encontrar y problemas de varios pasos.
- A number line shows a closed circle at 8 and is shaded to the left. Which inequality does this represent?
- x ≤ 8
- x < 8
- x ≥ 8
- x > 8
- Spot the Common Mistake
- Clue: the witness ran more than 15 feet, so d > 15. On the number line, what do you draw?
- Open circle at 15, shade right
- Closed circle at 15, shade right
- Open circle at 15, shade left
- Closed circle at 15, shade left
- What is the best next move?
- Test whether 2 itself makes the inequality true, then pick the circle.
- Draw a closed circle at 2, because circles are always filled in.
- Shade to the left of 2, because > points to smaller numbers.
- Mark only the point 2 and stop.
Stage 4 of 5Etapa 4 de 5 · OptionalOpcional
Practice MorePractica más
Optional extra practice. Press New numbers for another problem on the same skill.
Práctica extra opcional. Toca Números nuevos para otro problema de la misma habilidad.
- 5 fresh problems with new numbers each time (interactive only).
Stage 5 of 5Etapa 5 de 5
Show What You KnowDemuestra lo que sabes
Show what you learned today. Take your time; you can try again.
Muestra lo que aprendiste hoy. Tómate tu tiempo; puedes intentarlo otra vez.
- Why did the detective use an open circle at 12?
- Because 12 is negative
- Because the shading goes left
- Because 12 is not a whole number
- Because p < 12 does not include 12 itself
- Which number is a solution to p < 12?
- 11
- 12
- 13
- 15
- How would you graph the inequality x ≥ 9?
- Closed circle at 9, shaded right
- Open circle at 9, shaded right
- Closed circle at 9, shaded left
- Open circle at 9, shaded left