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Introduction to Equations and Inequalities

Plot ordered pairs in a Cartesian coordinate system.

Introduction to Equations and Inequalities

Irrigation is a critical aspect of agriculture, which can expand the yield of farms and enable farming in areas not naturally viable for crops. But the materials, equipment, and the water itself are expensive and complex. To be efficient and productive, farm owners and irrigation specialists must carefully lay out the network of pipes, pumps, and related equipment. The available land can be divided into regular portions (similar to a grid), and the different sizes of irrigation systems and conduits can be installed within the plotted area.

Sada ti Nema kalkulatora koji bi riješio ovaj problem, ali njegovi dijelovi se mogu izračunati. Pokušajte jedan od gore navedenih ili upišite svoj.

Neka tvoja radi.

Besplatni račun dodaje bilješke na svaku lekciju, zapis onoga što ste završili, vaše riješene probleme na jednom mjestu, i tutora kojeg možete pitati o ovoj stranici. Sama matematika je otvorena za svakoga, prijavljenog ili ne.

Prijavite se Prijava

Simboli korišteni ovdje

Dodirnite bilo koji simbol za potpunu definiciju, sliku i što svako slovo u njemu znači.

Kako: Introduction to Equations and Inequalities

  1. Plot ordered pairs in a Cartesian coordinate system.
  2. Graph equations by plotting points.
  3. Graph equations with a graphing utility.
  4. Find x-intercepts and y-intercepts.
  5. Use the distance formula.
  6. Use the midpoint formula.

Pitanja koja ljudi postavljaju

What does it mean to solve an equation?

To find every value of the unknown that makes both sides equal. Each step is an operation applied to both sides that keeps the solution set the same, until the unknown stands alone.

Why do I sometimes get two answers?

A quadratic can cross the axis twice, so it can have two solutions. A degree-n polynomial has up to n. The graph shows where each one comes from.

How do I know whether to factor or use the quadratic formula?

Try factoring for a few seconds: look for two numbers that multiply to a·c and add to b. If nothing obvious appears, the discriminant b² − 4ac tells you how many real roots there are, and the formula finds them without guessing.

Dio ove stranice je prilagođen sa OpenStax College Algebra 2e (CC BY-NC-SA 4.0). U ovom slučaju, greške su naše. Budući da je izvor licenciran za nekomercijalnu upotrebu, ova lekcija je besplatna, ne prodaje ništa i dijeli se pod istom licencom.

Više u Algebra

Linear equationsQuadratic equationsSystems of equationsInequalitiesFactoringExpandingSimplifying expressionsFunctions and graphsExponential and logarithmic equationsPolynomial equationsAbsolute value