Blog #13- Recipricals

This week we were taught about reciprocals.

In this blog I will be teaching you how to draw reciprocals for a linear graph.

First step: Plot your points

Second step: figure out the x intercept

Third step: find the -1 and 1 on the y axis

Fourth step: graph the reciprocal

Fifth step: find the points

 

Blog #12- graphing absolute values.

This week in Pre-Calc 11, we learned how to graph absolute values. These can be applied to both linear and quadratic functions. This task is very easy to complete.

When graphing absolute values the quatratic or linear line will never go below the x intercept.

When the parabola has a absolute value it forms a W shape.

This all happens because absolute value can never be a negative.

 

 

 

 

Pre Calc 11 – Blog #11

This week we learnt about systems of equations. A system of equations is a collection of two or more equations with a same set of unknowns. In solving a system of equations, we try to find values for each of the unknowns that will satisfy every equation in the system. The equations in the system can be linear or non-linear.

First step: Factor out the equation

Second step: Find the zeros

Last step: Test the numbers to see if your equation is true


Blog 5 – Trinomials

This week in pre-calc we learned how to factor using trinomials.

There are a couple steps to figuring this out, but once you have figured it out it is very simple.

  1. identify a,b, and c in the trinomial ax2+bx+c.
  2. write down all factor pairs of c.
  3. identify which factor pair from the previous step sums up to b.
  4. Substitute factor pairs into two binomials.

example:

  1. Continue reading

Blog 6 – quadratic equation

This week in Ms burtons pre calc class we learnt how do solve using the quadratic equation.

 

 

 

To solve this it’s easiest to determine was terms are A,B, and C. Once these variables are determined substitute these variables for the numbers from the equation. Use bedmas to solve for X