Question

3. If plx) = 6x2-3-7x then p(-1) is ---
A) 10 B)-4
C) -16
D) -2
Which of the following is the solution of linear equation
2x-3y +3=0
A) (1,1)
B) (0,1)
C) (1,0) D)(1,-1)
5. The discriminant of quadratic equation 2x2 + 3x-4=0 is
A) -8
B) -23
C) 17
D) 41
6)If 250, 225, 200,..... is an A.P then common difference d is
B)-25
A) 25
D) 250
D) 225
7The slope of the line passing (2, 3) and (-4, 6) is --
A) -1÷2
B)1÷3 c)-1÷3 D)1÷2
8)The centroid of the triangle whose vertices are (2,3),
14, 6) and (-3,0).
A) (3, 1)
B) (-1,3)
C) (1,3)
D) (1, -3)
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Answer 1

Answer:

3.c)16

Step-by-step explanation:

we have to substitute -1 in place of x