Question

Resolva : a)y=-15x+30
b)y=x-23
c) y=10x+40
d) y=2/3x-4/7
e) y=-5/8x+9/4
f) y=8/7x-5
g) y=-7x-7
não quero saber o valor de a ou b...

Answer 1

a) -15x=-30
x=-30/-15 x= 2
c) 10x=-40
x=-40/10 x=-4
d) -5/8x= 9/4
x=9/4/-5/8
x= 9/4×9/-5
x=72/-20 = 36/-10= 18/-5