Question 317007
I'm assuming that the equation is really {{{y=-4x+5}}}



{{{y=-4x+5}}} Start with the given equation.



{{{y=-4(1)+5}}} Plug in {{{x=1}}}



{{{y=-4+5}}} Multiply -4 and 1 to get -4



{{{y=1}}} Add -4 to 5 to get 1.



So when {{{x=1}}}, the value of y is {{{y=1}}}