Question

90 pts!, f the ordered pairs (3,a) and (b,-9) belong to {(x,y): y= 4x-1}, find a and b. Please solve this! :(

Answer 1

Step-by-step explanation:

(a,b):b=2a−3

(x,−1):−1=2x−3

2x=2

x=1

(5,y):y=2(5)−3

y=10−3=7

Answer 2

Answer:

a = y = -9

b = x = 3

Step-by-step explanation:

(3,a) = (x, y)

x=3

a=y

(3,4x-1) = (x, y)

(3,-9) = (x, y)

b=3

then,

4x-1= -9

4x= -8

x= -8/4

x = -2

then,

4(-2)-1= a

-8-1=a

-9= a

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