Question

The graph of which quadratic equation is shown below?



y = x2 + 4x − 3

y = x2 − 4x + 3

y = −x2 + 4x − 3

y = −x2 − 4x + 3

Answer 1

its the 2nd option

Answer 2

can u explain ?

Answer 3

sure .. see the diagram and check where the curve is intersecting with x-axis and y-axis..
when u look on y-axis. x= 0
put x= 0 in all equations and see when is y=3..
can u tell me for which options u get y=3?