Question

In the equation y = ax^2 + bx + c, what does c represent on the graph?

Answer 1

if you were to set say "x = 0"
what do you end up with?

Answer 2

i have no clue

Answer 3

well, lemme put it this way
if you set x = 0 in the equation, what would the equation look like?
that is, for every "x" you change it to a 0

Answer 4

o ok so y=c

Answer 5

yes, so let's take a peek at a graph

what's the value of the "x-axis" when the graph it TOUCHING the y-axis there?

Answer 6

0?

Answer 7

yes, so when "x = 0", whatever value "y" takes, is the point at which the graph TOUCHES the y-axis, or is when the graph INTERCEPTS the y-axis

thus that point is called the y-intercept
so setting x = 0, gave us y = c, thus "c" is the y-intercept

Answer 8

thanks this helped ALOT :)

Answer 9

yw