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1. Name the quadrant, if any, in i beg your pardon each point is located. (a) (-3, 6) (b) (7, -5) Solution:(a) (-3, 6) --------- II Quadrant.(b) (7, -5) --------- IV Quadrant.

2. Complete the table because that the provided equation and graph the equation;x + 2y = 5


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Solution:

x + 2y = 5 placed the worth of x = 0 in the equation x + 2y = 50 + 2y = 5 2y = 5 2y/2 = 5/2y = 5/2 (0, 5/2)Put the value of y = 0,x + 2 × 0 = 5 x = 5 (5, 0)Put the value of x = 2,2 + 2y = 5 2 – 2 + 2y = 5 - 2 2y = 32y/2 = 3/2y = 3/2 (2, 3/2)Put the value of y = 2,x + 2 × 2 = 5 x + 4 = 5x + 4 – 4 = 5 – 4x = 1 (1, 2)


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Solution:6x-5y=30 put the worth of x = 0 in the equation 6x - 5y = 30. 6 × 0 - 5y = 30 -5y = 30 -5y/-5 = 30/-5y = -6 (0, -6)Put the value of y = 0,6x - 5 × 0 = 30 6x = 306x/6 = 30/6x = 5(5, 0)Put the worth of x = 3,6 × 3 - 5y = 30 18 - 5y = 3018 – 18 – 5y = 30 – 18-5y = 12-5y/-5 = 12/-5y= -12/5(3, -12/5)Put the worth of y = -2,6x – 5(-2) = 306x + 10 = 306x + 10 – 10 = 30 – 106x = 206x/6 = 20/6x = 10/3 (10/3, -2)


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4. Uncover the x-and y-intercepts the the following equations.2x + 3y = 12

Solution:2x + 3y = 12Put the value of x = 02 × 0 + 3y = 123y = 123y/3 = 12/3y = 4Therefore, y-intercept = (0, 4)Now, placed the worth of y = 02x + 3 × 0 = 122x = 122x/2 = 12/2x = 6Therefore, x-intercept = (6, 0)

5. Uncover the x-and y-intercepts that the following equations. X + y = -2

Solution:x + y = -2

Put the worth of x = 00 + y = -2y = -2

Therefore, y-intercept = (0, -2)

Put the worth of y = 0x + 0 = -2x = -2

Therefore, x-intercept = (-2, 0)

6. Find the midpoint of every segment through the offered endpoints.

(-10, 4) and also (7, 1)Solution:

(-10, 4) and also (7, 1)

Midpoint = <(x1 + x2)/2, (y1 + y2)/2>Here, x1 = -10, x2 = 7, y1= 4 and also y2 = 1= <(-10 + 7)/2, (4 + 1)/2>= (-3/2, 5/2)Answer: (-3/2, 5/2)7. Find the midpoint of every segment with the given endpoints.(3,-6) and (6, 3)Solution:(3,-6) and (6, 3)Midpoint = <(x1 + x2)/2, (y1 + y2)/2>Here, x1 = 3, x2 = 6, y1= -6 and also y2 = 3

= <(3 + 6)/2, (-6 + 3)/2>= (9/2, -3/2)

Answer: (9/2, -3/2)

8. Decide whether the lines room parallel, perpendicular or neither.x + 4y = 7 and 4x – y = 3

Solution:

x + 4y = 7

4y = -x + 7

y = (-1/4) x + 7

Slope the the equation x + 4y = 7 is -1/4.

Again, 4x – y = 3

y = 4x – 3

Slope of the equation 4x – y = 3 is 4.

Since multiply both the steep of the equation = -1/4 × 4= -1

Therefore, the offered two equations space perpendicular to each other.

Answer: Perpendicular

9. The delivery has collaborates (2,3) the equation the the other line is x+y=2 discover the shortest distance from the delivery to the line.

Solution:

x + y = 2

x + y – 2 = 0

Distance indigenous (2, 3) come the heat x + y – 2 = 0

= (2 + 3 – 2)/√(12 + 12)= 3/√(1 + 1) = 3/√2= (3 × √2)/(√2 × √2)= (3√2)/2 units.Answer: (3√2)/2 units 10. Covert to scientific notation 0.000000373Solution:0.000000373= 3.73 × 10-7Answer: 3.73 × 10-711. Concealed to decimal notation 5.347 x 10-8Solution:5.347 x 10-8= 5.347/100000000= 0.00000005347Answer: 0.0000000534712. Multiply and write the result in clinical notation (3 x 105) (3 x 103)Solution:(3 x 105) (3 x 103)= 9×105 + 3= 3 × 3 × 105 × 103= 9 × 108Answer: 9 × 108

13. Simplify: 5 - 2 <8 - (2 x 2 - 4 x 4)>Solution:5 - 2 <8 - (2 x 2 - 4 x 4)>= 5 - 2 <8 - (4 - 16)>= 5 - 2 <8 - (-12)>= 5 - 2 <8 + 12>= 5 - 2 <20>= 5 – 40= -35Answer: -35

14. Fill in the blank:(a) The point with works with (0,0) is dubbed ........of a rectangular coordinate system.(b) To discover the x-intercept of a line, us let....equal 0 and solve for ......; to discover y-intercept, we let ......equal 0 and also solve for.......Solution:(a) The suggest with collaborates (0,0) is dubbed beginning of a rectangular coordinate system.(b) To discover the x-intercept the a line, us let y same 0 and also solve for x ; to uncover y-intercept, we let x same 0 and solve because that y .15. Name the quadrant, if any, in i beg your pardon each allude is located. (a) (1, 6)(b) (-4, -2) Solution:(a) (1, 6) --------- ns Quadrant.(b) (-4, -2) --------- III Quadrant.

16. A restaurant meal for a group of human being cost $85 total. This amount contained a 6% tax and also an 18% tip, both based upon the price of the food. I m sorry equation can be provided to uncover f, the expense of the food?

A. 85 = 1.24f         B. 85 = 0.24c         C. 85 = 1.06f + 0.18         D. 85 = f + 0.24

17. 3 friends re-superstructure the expense of a pizza. The base price of the pizza is p and the extra toppings price $4.50. If each person’s share to be $7.15, which equation can be used to find p, the basic price that the pizza?

A. 7.15 = 3p - 4.50  

B. 7.15 = 1/3(p + 4.50) 

C. 7.15 = 1/3p + 4.50

D. 7.15 = 3(p + 4.50)

Answer: B. 7.15 = 1/3(p + 4.50)

18. A tile setter is authorized the angle of 2 tiles, A and B, to do a 90-degree angle. The degree measure of angle A have the right to be represented as 3y + 2 and of edge B together 5y. I beg your pardon equation represents this situation?

A. 90 = 3y +2 – 5y     B. 3y + 2 = 90 + 5y     C. 90 = 8y + 2     D. 5y + 2 = 90 + 3y

Answer: C. 90 = 8y + 2

19. One-fourth the the distance between two urban is 100 miles much less than two-thirds the distance between the cities. I beg your pardon equation expresses this situation?

1/4d - 100 = 2/3d ,

1/4d = 2/3d -100,

1/4d = 2/3d +100,

1/4d - 2/3d = 100

Answer: 1/4d = 2/3d -100

20.

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What value of b renders the equation that adheres to true?

x2 + bx – 35 = (x + 5)(x – 7)

A. -2       B. 12      C. 2       D. -12

Answer: A. -2 

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