What value of x allows you to find the y-intercept? Where does the graph of each of these equations cross the y-axis? Refer to your Tool Kit entry on intercepts if you need help. Give each answer in the form of (0, _)
equation 1: y = 3x + 6
help?(:
Four answers:
Algebra House
2011-09-12 20:39:13 UTC
When the line crosses the y-axis, the value of x is 0.
To find the y-intercept, put 0 in for x.
y = 3x + 6
y = 3(0) + 6 {substituted 0 in for x}
y = 6 {multiplied 3 by 0}
y-intercept is 6.......coordinates are (0,6)
http://www.algebrahouse.com
2011-09-13 03:40:20 UTC
At y-intercept, y=0, therefore
y=3x+6
0=3x+6
-6=3x
x=-6/3
x=-2.
Answer:(0,-2).
2011-09-13 03:49:22 UTC
Sorry, Rich may be handsome and intelligent, but he is wrong in this case. The y-intercept occurs when x=0. In this case, the y-intercept is at (0, 6).
fashion crazy
2011-09-13 03:38:05 UTC
y=0
0=3x+6
0-6=3x
-6=3x
-6/3=x
x=-2
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