Quadratic Relations2.3 - Solving Quadratic Equations

Day 6: How to Solve Word Problems

Wednesday, May 3, 2023 1Day 6 - How to Solve Word Problems

Homework questions: Take up from sheets and look at last page

Wednesday, May 3, 2023 2Day 6 - How to Solve Word Problems

Since our unit is quadratics we know that a quadratic equation will be involved in solving word problems.

There are different ways of writing the same equations:

• y=a(x-h)2+k• y=ax2+bx+c • Factored form

Wednesday, May 3, 2023 3Day 6 - How to Solve Word Problems

There are some important points that come up in word problems.

• Vertex• x interceptsWhich version of the equation helps us for each of

these points?

Wednesday, May 3, 2023 4Day 6 - How to Solve Word Problems

Try page 225 # 15 (Soccer):

Wednesday, May 3, 2023 5Day 6 - How to Solve Word Problems

Try page 254 # 12 (Xiaoshang Bridge):

Wednesday, May 3, 2023 6Day 6 - How to Solve Word Problems

Homework:• Page 224 #8, 237 # 22, 255 #17, 276 #5,

293 #7

Wednesday, May 3, 2023 7Day 6 - How to Solve Word Problems