Homework #14 Answers
Homework Quiz
1) When you are solving a quadratic equation you are finding the
__________________ on the graph.
2) Solve each equation by finding the square roots. If the equation
has no solution, write "no solution"
a) b2 = 441
b) x2 - 9 = -16
c) 3x2 - x2 = 10
Homework Quiz
1) When you are solving a quadratic equation you are finding the
__________________ on the graph.
x - intercepts
2) Solve each equation by finding the square roots. If the equation
has no solution, write "no solution"
a) b2 = 441
b = ±21
= ±2.24
b) x2 - 9 = -16
no solution
c) 3x2 - x2 = 10
x
Example 1:
Example 2:
Step 1: Make sure the equation is written in standard form!!
Step 2: Factor the quadratic equation
Step 3: Use the zero product property to solve for the x-intercepts
Example 1:
Example 2:
Work on these problems. You have 10 minutes to finish!
(3, 0)
(7, 0)
(-4, 0)
(4.5, 0)
(-4, 0)
(1, 0)
(-2, 0)
(7, 0)
(0, 0)
(-1, 0)
(8, 0)
(0, 0)
Poster Project!!
1. You will be working in groups of 2
2. Work out all of the parts of the baseball problem together
3. Make a poster of your work from parts (d) - (f) of the problem.
your
Criteria for the poster:
- Must have a clear title
- Must be presented clearly and large enough to see
(NEAT, ORGANIZED, COLORFUL, CREATIVE)
- Must show correct answers and all work for parts (d) - (f)
- Must have the graph represented
- Must EXPLAIN what each of the four ordered pairs on
graph mean in terms of the problem
Criteria for the Graph:
- Must be graphed NEATLY (use a ruler to make straight
lines!)
and the
- Must be done large enough to see
- Both axes must be labeled correctly (name of the axes
scale that was used)
- Has the four ordered pairs from the work in parts (d) - (f)
plotted and labeled correctly
Poster Project!!
1. You will be working in groups of 2
2. Work out all of the parts of the baseball problem together
3. Make a poster of your work from parts (d) - (f) of the problem.
your
Criteria for the poster:
- Must have a clear title
- Must be presented clearly and large enough to see
(NEAT, ORGANIZED, COLORFUL, CREATIVE)
- Must show correct answers and all work for parts (d) - (f)
- Must have the graph represented
- Must EXPLAIN what each of the four ordered pairs on
graph mean in terms of the problem
Criteria for the Graph:
- Must be graphed NEATLY (use a ruler to make straight
lines!)
and the
- Must be done large enough to see
- Both axes must be labeled correctly (name of the axes
scale that was used)
- Has the four ordered pairs from the work in parts (d) - (f)
Homework #15
Solving Quadratic Equations by Factoring
Worksheet
#4 - 6, 12 - 19, 26, 28, 30
Quadratics Test Thursday/Friday!!!