Survey

Survey

Document related concepts

Quartic function wikipedia, lookup

Cubic function wikipedia, lookup

Quadratic equation wikipedia, lookup

Elementary algebra wikipedia, lookup

System of polynomial equations wikipedia, lookup

History of algebra wikipedia, lookup

System of linear equations wikipedia, lookup

Transcript

Warm up Benito is a waiter. He earns a base salary of $1,500 a month, plus 20% of the price of the meals he serves. 1. Write an equation to predict the amount of money Benito will earn if he serves $350 in meals. 2. Benito earned $1,650 in one month. What was the total price of the meals that Benito served? 3. Create a graph to show the possible amount of money Benito could earn each month. Warm up - debrief Benito is a waiter. He earns a base salary of $1,500 a month, plus 20% of the price of the meals he serves. 1. Write an equation to predict the amount of money Benito will earn if he serves $350 in meals. y=1500+0.20x 2. Benito earned $1,650 in one month. What was the total price of the meals that Benito served? Substitute $1,650 for y, the total amount of money Benito earned. 1650 = 1500 + 0.20x Solve for x. 1650 = 1500 + 0.20x 150 = 0.20x 750 = x Original equation Subtract 1,500 from both sides. Divide both sides by 0.20. Benito served $750 worth of meals. 3. Create a graph to show the possible amount of money Benito could earn each month. Warm up- debrief Benito is a waiter. He earns a base salary of $1,500 a month, plus 20% of the price of the meals he serves. 1. Write an equation to predict the amount of money Benito will earn if he serves $350 in meals. y=1500+0.20x 2. Benito earned $1,650 in one month. What was the total price of the meals that Benito served? Substitute $1,650 for y, the total amount of money Benito earned. 1650 = 1500 + 0.20x Solve for x. 1650 = 1500 + 0.20x 150 = 0.20x 750 = x Original equation Subtract 1,500 from both sides. Divide both sides by 0.20. Benito served $750 worth of meals. 3. Create a graph to show the possible amount of money Benito could earn each month. Standard A–REI.6 Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables. Learning Target There are various methods for solving a system of equations. One is the graphing method. I can use a TI-84 to graph system of equations. Graphing Equations Using a TI-84 1. 2. 3. 4. Enter the first equation into Y1. Enter the second equation into Y2. Hit GRAPH. Use the INTERSECT option to find where the two graphs intersect (the answer). 2nd TRACE (CALC) #5 intersect Move spider close to the intersection. Hit ENTER 3 times. Practice 2.3.3: Solving Systems of Linear Equations by Graphing Page # 36, do 1-4, 6, and 8