Răspuns:
Explicație pas cu pas:
2.
y = ax + b
P(-7; -4) x = -7; y = -4
C(-6; 1) x = -6; y = 1
-4 = -7x + b
1 = -6x + b
b = 7x - 4
1 = -6x + 7x - 4
x = 1 + 4 = 5
b = 7*5 - 4 = 35 - 4 =31
y = 5x + 31
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3.
f(x) = 11x + 4d - 6
H(1; -3)
x = 1; y = -3
y = f(x)
-3 = f(1)
-3 = 11 + 4d - 6
4d = -3 + 6 - 11 = -8
d = -8/4 = -2
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5.
f(x) = 9x - 2
Punctul de intersectie cu Oy are x = 0
f(0) = 9*0 - 2 = -2
A(0; -2)
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6.
f(x) = -10x + 8
-10u + 8 = 0
10u = 8
u = 8/10 = 4/5
