Question

HELP ASAP WILL GIVE BRAINLIEST

Answer 1

Answer:

y=2$x^{2}$ -7x-4

three linear equations

c=-4 ;4a+b=1 ; 9=a-b

Step-by-step explanation:

Simply assume a standard parabola equation y=a$x^{2}$ +bx +c

(here a, b, c are three independent variables)

Three coordinates as shown in graph are (0,4), (4,0) ,(-1,5)

Now put these points in the equation of parabola and get three linear equations.

[1] c=-4

[2] 4a+b=1

[3] 9=a-b

 Now substitute value of a from equation 2 into 3 in terms of b

 a=  $\frac{1-b}{4}$

 9=$\frac{1-b}{4}$-b

 b=-7

 a=2

y=2$x^{2}$ -7x-4