Is this equation linear or not, and is a function or not?

Linear function y = mx + b

so

2x + 3y = 6

3y = -2x + 6

y = -2/3 x + 2

y = -2/3 x + 2  is linear function

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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