The equation of the function is y = 4x + 5. Find the value of y when
x = 3
x = -2
y = 4x + 5 [Equation]
The value of y when x = 3 , x = -2
y = 4x + 5 [Given equation]
[tex] \therefore [/tex] When x = 3 ,
y = 4 × 3 + 5 [Value of x is 3]
y = 12 + 5
Again, when x = -2 ,
y = 4 × (-2) + 5 [Value of x is -2]
y = -8 + 5