IM3 Unit 1 Review

What are the values of a, b, and c in the quadratic equation 3x² - 10 = -4x

• a = 3x² b = -10 c = -4x

• a = 3 b = -10 c = -4

• a = 3 b = -4 c = -10

• a = 3 b = 4 c = -10

What is the quadratic formula?

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What is the positive solution to the equation 0 = (1/5)x² - 5?

• (1/5)

• 1

• 5

• -5

Use the quadratic formula to find the solutions for the equation 2x² + 16x - 18 = 0

• x = -1 and x = 9

• x = -9 and x = 1

• x = 2 and x= 18

• x = 2 and x = 16

Let's play a game! Look at this graph. Can you tell if it has a maximum or a minimum?

• It's a Maximum!

• Definitely a Minimum!

• There's no solution, I guess.

• Wait, it's Both!

What are the solutions to 5( x - 3 )² = 45?

• x = 6 and x = 0

• x = -3 and x = 45

• x = -6.71 and x = 6.71

• x = -3 and x = 3

Ready for a fun challenge? Can you spot the x-intercept among these options?

• Is it (0 , -3)?

• Could it be (3, 0)?

• Maybe it's (0, 3)?

• Or is it (-3, 0)?

Ready for a brain teaser? Can you tell me the formula for the axis of symmetry?

• Is it y = mx+b?

• Or maybe y = ax²+bx+c?

• Could it be b² - 4ac?

• Or is it x = -b/2a?

What is the discriminant of 6x² − 2x − 3 = 0

• 76

• 29

• 68

• 20

Use the discriminant to find the number of solutions for the following equation.

y = -3x² +5x - 8

• 2 solutions

• 1 solution

• 0 real solutions

• 2 irrational solutions