Quadratic Functions MCR3U Unit 3 Test Solution

#vertexformMadeSImple #parabolaGraph #Standardform_VertexForm #equationfromgraph #grade10maths #anilkumar #globalmathinstitute #factorformMadeSimpleNEXT:
Q1. Solve x2 – 8x = -12 by graphing.
Q2. Solve x2 – 8x = 9 by factoring.
Q3. Solve 3x2 – 2x = 2 using quadratic formula
Q4. Find Vertex: x2 – 6x + 9 by graphing
Q5. Find Vertex: -0.5x2 – 3x – 1 by completing squares
Q6. Find Vertex: 6x2 + 24x – 3 by partial factoring
Q7. Determine equation of parabola with roots at -2 and 6 passing through (1, 4).
Q8. Find equation of parabola with roots at -1 and -7 with y-intercept of -9.
Q9. Find equation of parabola through (2, -18) with roots at 3±√7
Q10. Determine number of intersections of the following linear-quadratic system:
a. f(x) = x2 – 2x + 1 and g(x) = x – 2
b. f(x) = 2x2 – 3x + 4 and g(x) = 3x + 4
c. f(x) = x2 – 6x – 7 and g(x) = –16

Q11. Given linear-quadratic system f(x) = kx2 + 4x – 3; g(x) = 2x – 7. Determine the value of k for
a. one solution
b. no solution
c. two solutions

[munchbot]

Question 3, when you put in the quadratic formula, it’s not 4, it’s supposed to be 2.

[munchbot]

question 7, you changed the 6 to a 5 by accident. so the answer is f(x)=4/15 (x+2)(x-6)

[munchbot]

question 1 was done wrong, the vertex is (4, -4).