zadania znajdują się w załączniku
a)
y = 3x || y = ax + b ⇔ 3 = a
y = 3x + b i P = (0, 2)
x y
2 = 3 * 0 + b
2 = b
odp. y = 3x + 2
b)
y = -2x + 1 || y = ax + b ⇔ -2 = a
y = -2x + b i P = (1, 3)
3 = -2 * 1 + b
3 = -2 + b
b = 5
odp. y = -2x + 5
c)
y = √2x - 1 || y = ax + b ⇔ √2 = a
y = √2x + b i P = (√2, -2)
-2 = √2 * √2 + b
-2 = 2 + b
b = -4
odp. y = √2x - 4
d)
y = 5 || y = ax + b ⇔ 0 = a
y = 0 * x + b i P = (3, 8)
8 = 0 * 3 + b
8 = 0 + b
b = 8
odp. y = 8
2.
m * 2/3 = -1
m = -1 * 3/2
m = -3/2 ---------- odpowiedx
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a)
y = 3x || y = ax + b ⇔ 3 = a
y = 3x + b i P = (0, 2)
x y
2 = 3 * 0 + b
2 = b
odp. y = 3x + 2
b)
y = -2x + 1 || y = ax + b ⇔ -2 = a
y = -2x + b i P = (1, 3)
x y
3 = -2 * 1 + b
3 = -2 + b
b = 5
odp. y = -2x + 5
c)
y = √2x - 1 || y = ax + b ⇔ √2 = a
y = √2x + b i P = (√2, -2)
x y
-2 = √2 * √2 + b
-2 = 2 + b
b = -4
odp. y = √2x - 4
d)
y = 5 || y = ax + b ⇔ 0 = a
y = 0 * x + b i P = (3, 8)
x y
8 = 0 * 3 + b
8 = 0 + b
b = 8
odp. y = 8
2.
m * 2/3 = -1
m = -1 * 3/2
m = -3/2 ---------- odpowiedx