Question

Write an equation that represents the line use exact numbers

Answer 1

y = ax + b

b = 3

since the line cuts the y-axis in 3

then for a ? which is the slope..

we take 2 points on the line (0 ; 3) and (2 ; 6)

we move 2 units to the left to go up 3 units

so a = 3/2

=> y = 3/2x + 3

or

f(x) = 3/2x + 3

Answer 2

hello

f (2 ) = 6 et f ( 0 ) = 3

( 3 - 6 ) / ( 0 - 2 ) = - 3/- 2 = 3/2

ax = 3 x /2

f (0) = 3 ⇔ b = 3

f (x) = 3 x /2 + 3

also f ( 0) = 0 + 3 = 3

sorry