Can y’all please help

See the step-by-step

Step-by-step explanation:

Q1:

Rewrite the equation in vertex form:

y=a(x-h)^2+k

y= a(x- (-5/2)^2 + (-53/4)

The vertex is (h,k)

The vertex is( , )

To find the y-intercepts, put 0 in for y.

x^2+5x-7 isn't factorable. Use the quadratic equation.

a= 1 b= 5 c= -7

and

(,0) and (,0)

= 1.14005494,−6.14005494

Q2:

vertex: (,)

Again, use the quadratic formula.

a= -1 b=3 c= 8

or

 (,0)  (,0)

x=4.70156211,−1.70156211

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,