m = 4 b = -7
(0, -7)
y = mx + b
y = 4x + (-7)
y = 4x - 7
0 = 4× - 7 - y
___________
| 4x - y - 7 = 0 |
°°°°°°°°°°°°°°°°°°°°°°
Comprobación (0, -7)
4x - y - 7 = 0
4(0) - (-7) - 7 = 0
0 + 7 - 7 = 0
0 = 0
Graficando
Para y = 0 x = ?
4x - 0 - 7 = 0
4x - 7 = 0
4x = 7
x = 7/4
________
| P2(7/4, 0) |
| P1(0, -7) |
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m = 4 b = -7
(0, -7)
y = mx + b
y = 4x + (-7)
y = 4x - 7
0 = 4× - 7 - y
___________
| 4x - y - 7 = 0 |
°°°°°°°°°°°°°°°°°°°°°°
Comprobación (0, -7)
4x - y - 7 = 0
4(0) - (-7) - 7 = 0
0 + 7 - 7 = 0
0 = 0
Graficando
4x - y - 7 = 0
Para y = 0 x = ?
4x - 0 - 7 = 0
4x - 7 = 0
4x = 7
x = 7/4
________
| P2(7/4, 0) |
| P1(0, -7) |
¬¬¬¬¬¬¬¬¬¬