Answer:
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Step-by-step explanation:
2 = - 2 m + b
-1 = - m + b / ·(-1 )
--------------------------
2 = - 2 m + b
+
1 = m - b
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3 = -m, m= -3, 2 = 6 + b, b = -4,
f ( x ) = - 3 x - 4
For the linear function h (x)9 we have 3 apples less every day:
h ( x) = - 3 x + 4
- 2 = - 2 m + b
+
10 = 2 m + b
-------------------
8 = 2 b, b = 4, m = 3
j ( x ) = 3 x + 4
Four linear functions are:
1 ) f ( x ) = - 3 x - 4
Linear function has a slope: m = -3, y-intercept: y = -4, zero: x = -4/3 and this function is constantly decreasing.
2 ) g (x ) = 3 x - 4
Function has a slope: m = 3, y-intercept : y =-4, zero: x = 4/3 and it is constantly increasing.
3 ) h ( x ) = - 3 x + 4
Function has a slope: m = -3, y-intercept: y = 4, zero: x = 4/3 and it is constantly decreasing.
4 ) j (x) = 3 x + 4
Function has a slope m = 3, y-intercept : y = 4, zero: x = 4 and it is constantly increasing.
Two linear functions f ( x ) and h ( x ) are parallel ( have an equal slope ), and also are g ( x ) and j ( x ).
