if its like y = 3x + 1
then the y-intercept would be 1.
because slope-intercept form is y = mx + b, and b is the y-intercept. so how would you find the x-intercept of that equation????
2007-09-19 12:48:04 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
for x-intercept you put y=0 and you get
y=b
for y-intercept you put x=0 and you get
0=mx+b and solve for x
x-intercept is the intersection with x-axis, that is way you have y=0 and
y-intercept is the intersection with y-axis, that is why you have
x=0
2007-09-19 13:02:50 · answer #1 · answered by Theta40 7 · 0⤊ 0⤋
The x-intercept is the point where it crosses the x-axis. That's also where y = 0. So set y = 0 and solve for x.
0 = 3x + 1, so x = -1/3. That would be the x-intercept.
2007-09-19 12:52:35 · answer #2 · answered by Anonymous · 0⤊ 0⤋
To find the x intercept just put 0 for y and solve.
0=3x+1
3x=-1
x=-1/3
The x-intercept is -1/3
2007-09-19 12:51:04 · answer #3 · answered by Justin 3 · 0⤊ 0⤋
Just set y=0 and solve for x.
0 = 3x+1
-1 = 3x
x = -1/3
The x-intercept is (-1/3,0)
2007-09-19 12:52:26 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋
right now the equation is in the wrong form to find the x intercept
try point slope form or standard form.
i can't quite remember which one. algebra was last year.
i am 60 percent sure it's standard form,though
if you really can't figure it out,
graph the equation based on the slope and see where it intersects on the x axis
I believe in this case the x-axis is -1 but im not sure YOU HAVE TO CHECK
2007-09-19 13:00:28 · answer #5 · answered by xelaxela222 2 · 0⤊ 1⤋
x=-1/3, value of y is zero to get the x-intercept
2007-09-19 12:59:19 · answer #6 · answered by criselda 3 · 0⤊ 0⤋