What is the value of the function $y = 2 x - 3$ $y=2x-3$ when x=-1?

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Answer 1 · 2016-12-07T13:49:06

y = -5

Substitute $- 1$ $-1$ for $x$ $x$ in the equation and solve for $y$ $y$ :

$y = 2 x - 3$ $y=2x-3$

$y = 2 (- 1) - 3$ $y = 2(-1)-3$

$y = - 2 - 3$ $y = -2 - 3$

$y = - 5$ $y = -5$

What is the value of the function y=2x−3y=2x-3 when x=-1?