### PARCC Algebra 2: Modeling a delivery route

We sometimes need to develop mathematical models for costs we incur in our jobs or in daily life. Here’s one way to do just that.

We sometimes need to develop mathematical models for costs we incur in our jobs or in daily life. Here’s one way to do just that.

Creating 2 equations in 2 unknowns to describe a set of conditions is a skill algebra 1 students need if they’ll be taking the PARCC test this spring.

How would you figure out (and explain) when one car, traveling at a given speed, will overtake another car that had a head start?

Adding, multiplying, & subtracting polynomials is tested, quite thoroughly, on the PARCC algebra 1 test, used in Md. and some middle schools in IL.

Solving equations for a variable of interest is required in algebra 1 on the PARCC test (and in the Common Core). Students find the radius of a circular pool.

Is a given ordered pair on the graph of a function? Algebra 1 students should be able to figure it out, esp. those who will take the PARCC test this year.

The zeros of a polynomial are the *x* values when the polynomial equals 0. Do you know how to find the zeros?

Modeling real-world situations sometimes requires a linear model, sometimes an exponential model, sometimes a coffee model.

The point at which something more expensive to buy becomes less expensive because operating costs aren’t as high can be modeled with a system of linear equations.

We have lots of equivalent ways of writing equations for lines, or linear functions, including slope-intercept, point-slope, and Ax+By=C.