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Straight lines worksheet

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Straight lines
Level 1 · Function values and slope
Find the value of the function.
1.
f(x)=−4x+7,f(2)=‾f(x) = -4x + 7,\quad f(2) = \underline{\hspace{4.5em}}
2.
f(x)=x−4,f(−2)=‾f(x) = x - 4,\quad f(-2) = \underline{\hspace{4.5em}}
3.
f(x)=3x+9,f(0)=‾f(x) = 3x + 9,\quad f(0) = \underline{\hspace{4.5em}}
4.
f(x)=x+1,f(2)=‾f(x) = x + 1,\quad f(2) = \underline{\hspace{4.5em}}
5.
f(x)=−5x+6,f(1)=‾f(x) = -5x + 6,\quad f(1) = \underline{\hspace{4.5em}}
Give the slope k of each line.
6.
y=−8+4xy = -8 + 4x
k=k =
7.
y=6x−7y = 6x - 7
k=k =
8.
y=−9+3xy = -9 + 3x
k=k =
9.
y=−6x+1y = -6x + 1
k=k =
10.
y=−2x−7y = -2x - 7
k=k =
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Answer key
Straight lines · Level 1 · Function values and slope
1.−1-1
2.−6-6
3.99
4.33
5.11
6.k=4k = 4
7.k=6k = 6
8.k=3k = 3
9.k=−6k = -6
10.k=−2k = -2
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