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If x=3 and y=0.5 then what is the value for z when z=(2x+1)(x+3y)?

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Presentation on theme: "If x=3 and y=0.5 then what is the value for z when z=(2x+1)(x+3y)?"— Presentation transcript:

1 If x=3 and y=0.5 then what is the value for z when z=(2x+1)(x+3y)?

2 Solve the linear equation 4(x-2)+3(2x-5)=1

3 Given the equation x=x 1 +2x 2, where x=34 and 2x 1 =16. What is the value of x 2 ? 1.9 2.26 3.13 4.18

4 Which of the following equations are linear? 1. 2. 3. 4. 5.

5 What are the roots of 1.-½, 3 2.½, 3 3.½, -3 4.-½, -3

6 When finding the roots of ax 2 +bx+c, if b 2 -4ac<0 then the quadratic has: 1.Two real and distinct roots. 2.No real roots. 3.One real, repeated root.

7 Find the roots of –x 2 +4x+1=0 to 4d.p. 1.0.2361, -4.2361 2.-0.2361, 4.2361 3.-0.2360, 4.2360 4.0.2360, -4,2360

8 To 3dp use the quadratic formula to find the largest root of

9 What are the complex roots of 1. 2. 3.

10 A linear expression multiplied by a quadratic expression always gives a cubic expression. 1.True 2.False

11 If 3x 3 +4x 2 -x-2 = (x+1)×(a polynomial), what is the degree of the undefined polynomial? 1.First 2.Second 3.Third 4.Fourth

12 If 3x 3 +4x 2 -x-2 = (x+1)×(a polynomial), what must be the coefficient of x 2 in this unknown polynomial? 1.1 2.2 3.3 4.Impossible to know

13 A cubic polynomial is multiplied by a quadratic polynomial. What is the degree of the resulting polynomial? 1.Third 2.Fourth 3.Fifth 4.Sixth 5.Don’t know

14 A polynomial of degree n has at most n-1 roots. 1.True 2.False

15 Which of the following graphs represents a quadratic equation with complex roots? 1.2. 3. 4.

16 Solve the simultaneous equations 3x+2y=4 and 2x+y=3 Give the value for x

17 Which of the following systems of equations could be represented by the graph? 1. 2. 3. 4.

18 Which of the following systems of equations could be represented by the graph? 1. 2. 3. 4.

19 Which of the following could be represented by the graph? 1. 2. 3. 4.

20 Using the graph, what is the x solution to the following system of equations? y-3x=-10 y+2x=5 1.x=3.33 2.x=-1 3.x=3 4.x=2.5

21 Multiplying or dividing both sides of an inequality by a negative number leaves the inequality symbol unchanged. 1.True 2.False 3.Don’t know

22 11+x > 7+x 1.True 2.False 3.Depends what the value of x is.

23 Solve the inequality |2x-4|<16. 1.x 10 2.-6<x<10 3.-10<x<6 4.x 6

24 Using the graph, find the range of values for which x 2 +7x+12>0. 1.x>-4, x>-3 2.x<-4, x<-3 3.-4<x<-3 4.x -3

25 Express in partial fractions. 1. 2. 3. 4.

26 Express in partial fractions. 1. 2. 3. 4.

27 Express in partial fractions. 1. 2. 3.4.


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