If f(x)=3x+12, find the value of the y-intercept.
PLEASE HELP ME, IM BEGGING YOU.

Question

If f(x)=3x+12, find the value of the y-intercept. 
PLEASE HELP ME, IM BEGGING YOU.

anonymous · Answer

y=3x+12

anonymous · Answer

After that are you supposed to divide everything by 3?

anonymous · Answer

yes, divide by 3 and then you will have your y.

anonymous · Answer

Ok, so the answer I got was 12, is that correct?

directrix · Answer

The y-intercept is where the graph of the equation cuts the y-axis.
All points on the y-axis have an x-coordinate of 0.

So,

y =3x+12
y  = 3*0 + 12
y = 12 as you stated above.

The coordinates of the y-intercept are (0, 12)

@plzzhelp

alekos · Answer

also, with any straight line of the form y = mx + b

b is the y-intercept and m is the slope

alekos · Answer

so no calculation required in this case

anonymous · Answer

Thank you so much!