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Jaden Humphrey
Mathematics
8 March, 15:07
X-intercept and y-intercept of 9.3x+4.2y+3.9=0
+3
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Darryl Bennett
8 March, 15:14
0
y intercept = - 0.93
x intercept = - 0.42
Step-by-step explanation:
To get x intercept, substitute y for 0 and solve for x.
To get y intercept, substitute x for 0 and solve for y.
X intercept:
9.3x + 4.2y + 3.9 = 0
9.3x + 4.2 (0) + 3.9 = 0
9.3x + 3.9 = 0
Subtract 3.9 to get it on the other side
9.3x + 3.9 - 3.9 = 0 - 3.9
9.3x = - 3.9
Divide 9.3 to get x by itself
(9.3x) / (9.3) = (-3.9) / (3.9)
x = - 0.419355
Since there are some extra numbers, I will round it to the nearest hundredth to make it easier
-0.419355 = - 0.42
Y intercept:
9.3x + 4.2y + 3.9 = 0
9.3 (0) + 4.2y + 3.9 = 0
4.2y + 3.9 = 0
Subtract 3.9 to get it on the other side
4.2y + 3.9 - 3.9 = 0 - 3.9
4.2y = - 3.9
Divide 4.2 to get y by itself
(4.2x) / (4.2) = (-3.9) / (4.2)
x = - 0.928571
Round answer to nearest hundredths
-0.928571 = - 0.93
Notes:
If your answer is an extended decimal number, round it to the nearest hundredths to make it easier
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