The y-intercept of the parabola described by y = 2(x - 5)2 + 6 is?
2007-10-04 07:23:30 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Y intecept means that it's x value is 0. So just plug in 0
y=2 (0-5)^2 + 6 = 2 (-5)^2 + 6 = 2 * 25 + 6 = 56
2007-10-04 07:29:36 · answer #1 · answered by Alexis P 2 · 0⤊ 0⤋
y intercept in plain english is plug in 0 for x.
so when x is 0 we have:
y= 2(0-5)^2 + 6
y=6
A short cut to these kind of problems is to think of the number term by itself as the y intercept.
So just by looking you could have said +6
2007-10-04 14:32:46 · answer #2 · answered by 037 G 6 · 0⤊ 0⤋
set y=0, so
2(x-5)2+6=0
assuming that the twos are in the right spot,
4(x-5)+6=0
4x-20+6=0
4x=20-6
4x=14
x=14/4
Hope this helps!
2007-10-04 14:28:54 · answer #3 · answered by car 3 · 0⤊ 1⤋