Question

1. Given the equation ​ ​y​ = -3​x​ + 2.5

a. When ​x​ is 1, what value of ​y​ makes the equation true?


b. When ​x​ is -1.5, what value of ​y​ makes the equation true?

Answer 1

a. when x=1 so substitute 1 to any X in the given equation.

y=-3(1)+2.5

y=-3+2.5

y=-0.5

b.when x is -1.5 so substitute -1.5 to any x in the equation

y=-3(-1.5)+2.5

y=-4.5+2.5

y=-2