Which of the ordered pairs in the form x, y is a solution of this equation

The first is a solution, but the second is not

Step-by-step explanation:

we know that

If a ordered pair is a solution of a linear equation, then the ordered pair must satisfy the linear equation (makes the equation true)

we have

Verify the first ordered pair

Part a) we have (2,-9)

For x=2, y=-9

substitute in the linear equation

----> is true

so

The ordered pair satisfy the equation

The ordered pair is a solution of the equation

Verify the second ordered pair

Part b) we have (3,-6)

For x=3, y=-6

substitute in the linear equation

----> is not true

so

The ordered pair not satisfy the equation

The ordered pair is not a solution of the equation

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.