find the y intercept for both of these problems
2007-10-31 10:48:02 · 7 answers · asked by abqskater 1 in Science & Mathematics ➔ Mathematics
the y intercept is when x=0, so just set x=0 for both equations.
7-12(0)=3y
7=3y
y=2.5
4y+9=5(0)
4y+9=0
4y= -9
y= -2.25
2007-10-31 10:51:54 · answer #1 · answered by Anonymous · 3⤊ 2⤋
y = 7/3 and y = - 9/4
2007-11-04 14:44:06 · answer #2 · answered by Como 7 · 0⤊ 1⤋
y intercept is where you cross the y-axis. so X = 0
1.) 7=3y, y=(7/3) answer: (0, {7/3})
2.) 4y+9=0, 4y=-9, y= (-9/4) answer: (0, {-9/4})
remember y=mx+b, for intercepts mx=-b
2007-10-31 18:02:10 · answer #3 · answered by Christopher J 2 · 1⤊ 0⤋
1. y intercept = 0
2. y intercept = - 9 /4
2007-10-31 18:11:01 · answer #4 · answered by 777 6 · 0⤊ 0⤋
7/3 and -9/4
Just solve for y
3y = -12x +7
y = -4x +7/3 <-- - 4 is slope and 7/3 is y-intercept
Similarly'
4y+9 = 5x
4y= 5x-9
y = 5x/4 -9/4 <-- y-intercept = -9/4
2007-10-31 17:53:35 · answer #5 · answered by ironduke8159 7 · 0⤊ 1⤋
first one
7 - 12 (0)=3y
y= 7/3
second one
4y+9=5 (0)
y=-9/4
2007-10-31 17:55:40 · answer #6 · answered by Bryan B 2 · 0⤊ 1⤋
no
2007-10-31 17:51:31 · answer #7 · answered by Ted B 2 · 0⤊ 4⤋