Felix101
Answered

PLEASE HELP!!!


1) Write the equation of the line that passes through points (3,6) and (5,18) using function notation.


f(x)=2x+12

f(x)=6x-12

y=2x+12

y=6x-12


2) Choose the equation of the horizontal line that passes through the point (2,4).


y=2

x=2

y=4

x=4

Verified Answer :

1)
y = ax+b

6 = 3a + b
18 = 5a + b

b = 6 - 3a
18 = 5a + 6 - 3a

2a = 12
a = 6
b = 6 - 18
b = -12

f(x) = 6x -12

2)
y = 2 
No, because y ≠ 4

x = 2 
No, because it's vertical

y = 4 
Yes, because x ∈ ℝ and y = 4

x = 4
No, because it's verical


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