Question

5.
If p(x) is a polynomial of degree 100, then the sum
of coefficients of even powers of x is
(1) PIV+(-1)
(2) P(1) + p(-1)
(3) P(1)
(4) P(-1)
16.
The intersection point of graphs of two lines
3x + 4y = 12 and 3x - 4y = -12 will lie on/in
(1) Y-axis
(3) 1st quadrant (4) Origin
X-axis​

Answer 1

Answer:

Y-axis

Step-by-step explanation:

The given two line equations are

3x+4y=12 and 3x-4y=-12

now we solve these two equations

3x+4y=12

3x-4y=-12 when we add these equations we can write them as

(3x+4y)+(3x-4y)=(12)+(-12)

or 6x=0

i.e x= 0, when we put this x value in any one of above equation we can find y value.

3(0)+4y=12

or, y =(12/)4

y=3

since X=0 and Y=3 the point only lies on Y-axis