Solving Equations by the Quadratic Formula and Quadratic Methods
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Give the formula solving for “x” given an equation expressed as: ax2 + bx + c = 0, when a ≠ 0? | x=(-b±√(b^2-4ac))/2a
🗑
|
||||
| Show the expression solving for “x” of the following quadratic equation expressed as: 3x^2+16x+5=0? Do not simplify, express as x = ? | x=(-16±√(〖16〗^2-4(3)(5)))/(2(3))
🗑
|
||||
| For the equation below what are the correct coefficents for substitution into the quadratic formula? 3x^2+16x+5=0 Anwser as a=_ , b=_ , c=_ | a=3 , b=16 , c=5
🗑
|
||||
| Find the discriminant of the following equation. How many solutions, if any, are correct? If so, are they real or complex? 2x^2+6x+9=0 | 2, real
🗑
|
||||
| What is equation of the Pythagorean Theorem? What does this solve? | a^2+b^2=c^2
Gives the third side of a triangle, given the other 2 sides.
🗑
|
||||
| If Peter is going to cut across the parking lot instead of walking around it, give the quadratic equation set to zero, if his new route is 100ft and one side is 30 feet longer than the other. | 2x2+60x-9100=0
🗑
|
||||
| What is the equation for the first coordinate of the vertex for the equation “y=ax^2+bx+c” Answer as: x of vertex is “_” | x of vertex is “-b/2a”
🗑
|
||||
| What is the equation used to find the “x” intercepts of a parabola with the equation of: "y=ax^2+bx+c” | The Quadratic formula, setting y =0, then
x=(-b±√(b^2-4ac))/2a
🗑
|
||||
| Find the y-intercept of the parabola with the equation of: "y=ax^2+bx+c” Express answer as an ordered pair. | (0,c)
🗑
|
||||
| Which direction does the graph of a parabola open if the equation is: "y=-4x^2+6x+12” | Downward
🗑
|
||||
| If Tommy throws a baseball in the air from the ground at a velocity of 19 ft per second, then how long will it take the baseball to hit the ground, given the function: h=-16t^2+vt Round answer to the nearest hundredth. | t = 1.19 seconds
🗑
|
||||
| If Tommy throws a rock in the air from the ground at a velocity of 27 ft per second, then how high will the rock get? Will it hit the street light which is 10 ft high, given the function: h=-16t^2+vt Round answer to the nearest hundredth. | 11.39 ft., Yes it will hit it.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
mabrahamson12
Popular Math sets