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nerdy Q2 2021 A = m A tw Varsity Tutors 1 of 1 + *** Varsity Tutor https://www.varstytutors.com/session/ligh Varsity Tutors Earnings Release 00:12 Default Mode ▾ E 10 abc R D 白 19 Type Math Stickers Arrows White Practice Shapes My Files < 2015 > + X End Session In mathematics , a linear equation is an equation that may be put in form ++ z + b = 0 , where ... , are the variables ( or unknowns ) , and b , as , , a are the coefficients , which are often real numbers . The coefficients may be considered as parameters of the equation , and may be arbitrary expressions , provided they do not contain any of the variables . To yield a meaningful equation , the coefficients aa are required to not all be zero . Alternatively a linear equation can be obtained by equating to zero a linear polynomial over some field , from which the coefficients are taken . y = -x + 5 ↑ y = x + 2 Two graphs of linear equations in two variables Virtual 京 SUMMER CAMPS