We are continuing our work with quadratics this week! :)
Tuesday & Wednesday: You will be learning the Quadratic Formula, and using it to solve quadratic equations. This formula is very useful when we need to find the x-intercepts for a quadratic equations that can't be factored. I assigned the videos for Tuesday, and the practice for Wednesday. However, if you want to try the practice problems on Tuesday after watching the first video and/or looking at the color-coded picture I attached for you below, then go ahead! This is a formula you are going to want to remember, and it's a lot easier to memorize if you sing it to the tune of "Pop, Goes the Weasel"!
Thursday: You can use a portion of the Quadratic Formula (called the Discriminant) to determine if a quadratic equation has any zeros (x-intercepts). The Discriminant is the part of the formula that is inside of the square root. Remember that we can't take the square root of a negative because it's undefined? That means if the Discriminant is negative then the equation has no zeros--meaning it has no x-intercepts (meaning it does not cross the x-axis). If the Discriminant is zero, then the equation (whose graph is a parabola) has only one x-intercept, because zero has only one square root--zero! This means that the vertex will be on the x-axis.
Friday: Last week we looked at vertex form of a Quadratic Equation. Today you're going to use vertex form to shift parabolas, or describe how the parabola was shifted--vertical and horizontal translations. I assigned the video for this assignment too (it's only 4 1/2 minutes long).
As always, remember that I am here for you if you have questions or need help!
Tuesday & Wednesday: You will be learning the Quadratic Formula, and using it to solve quadratic equations. This formula is very useful when we need to find the x-intercepts for a quadratic equations that can't be factored. I assigned the videos for Tuesday, and the practice for Wednesday. However, if you want to try the practice problems on Tuesday after watching the first video and/or looking at the color-coded picture I attached for you below, then go ahead! This is a formula you are going to want to remember, and it's a lot easier to memorize if you sing it to the tune of "Pop, Goes the Weasel"!
Thursday: You can use a portion of the Quadratic Formula (called the Discriminant) to determine if a quadratic equation has any zeros (x-intercepts). The Discriminant is the part of the formula that is inside of the square root. Remember that we can't take the square root of a negative because it's undefined? That means if the Discriminant is negative then the equation has no zeros--meaning it has no x-intercepts (meaning it does not cross the x-axis). If the Discriminant is zero, then the equation (whose graph is a parabola) has only one x-intercept, because zero has only one square root--zero! This means that the vertex will be on the x-axis.
Friday: Last week we looked at vertex form of a Quadratic Equation. Today you're going to use vertex form to shift parabolas, or describe how the parabola was shifted--vertical and horizontal translations. I assigned the video for this assignment too (it's only 4 1/2 minutes long).
As always, remember that I am here for you if you have questions or need help!