Задача Задача №3453308
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Here are the key facts about the line y = -4x + 1, useful for exams:
- Slope (m): -4 (steep negative slope)
- y-intercept (b): 1 (point (0, 1))
- x-intercept: set y = 0 → 0 = -4x + 1 → x = 1/4, so (1/4, 0)
- Standard form: 4x + y - 1 = 0
- Domain: all real numbers; Range: all real numbers
- Quick points on the line:
- x = 0 → y = 1 (0, 1)
- x = 1 → y = -3 (1, -3)
- x = -1 → y = 5 (-1, 5)
- x = 2 → y = -7 (2, -7)
Sample quick problems (with solutions):
- Find y when x = 5: y = -4(5) + 1 = -20 + 1 = -19.
- Find x when y = -2: -2 = -4x + 1 → -3 = -4x → x = 3/4.
- Equation of a line parallel to y = -4x + 1 that passes through (2, 0): y - 0 = -4(x - 2) → y = -4x + 8.
If you’d like, I can create a short practice set (with answers) or help with a specific exam-style question you’re studying.