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If f(x)= |4x - 1|, find the value of x if(x) = 7
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If f(x)= |4x - 1|, find the value of x if(x) = 7

User Fauzia
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2 Answers

1 vote
x=2 i hope that helps soo yeah
User Ram Dhakne
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7.3k points
4 votes
f(x) = | 4x - 1 | .....when f(x) = 7
7 = | 4x - 1 |

4x - 1 = 7 -(4x - 1) = 7
4x = 7 + 1 -4x + 1 = 7
4x = 8 -4x = 7 - 1
x = 8/4 -4x = 6
x = 2 x = -6/4
x = - 3/2

solutions are x = -3/2, 2
User Samuel Carrijo
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8.1k points
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