Question

does point (1,-2) lie on the graph of the polynomial -3x+2x+1

Answer 1

Points-(1,-2)
Hence, x=1 and y=-2
Putting values in the equation 
-3x+2x+1 = 0
-3(1) +2(-2) +1 = 0
-3 -4 +1 =0
-6=0
as LHS is not equal to RHS
thus implies the point(1,-2) does not lie on the graph of the polynomial -3x+2x+1

Answer 2

Answered by ❤

Brainly Verified

No, (1,-2) don't lies on the graph of p(x)

some users might get confused that I changes p(x) into y.

See,

if this was an expression with no 'y' in it then I would have added a 0y in it, but this is an polynomial(equation) so in these kind of cases we changes p(x) into y

And if this equation was having the variable y then I would have changed p(y) into x.

Hope this ans helped you.