For 10 points, name this word that names equations of the first degree, which can be written in slope-intercept form.
According to VSEPR theory, this molecular geometry is possessed by the tri-iodide anion, in which the central iodine atom is bonded to two other iodines and three lone pairs. In this type of mathematical programming, the simplex algorithm is efficient at solving most problems. Molecular orbitals can be expressed as this type of combination of atomic orbitals. This word names a branch of algebra concerned with matrices and vector spaces. VSEPR theory also predicts that carbon dioxide, with bond angles of 180 degrees, has this molecular geometry. For 10 points, name this word that names equations of the first degree, which can be written in slope-intercept form. 
According to VSEPR theory, this molecular geometry is possessed by the tri-iodide anion, in which the central iodine atom is bonded to two other iodines and three lone pairs.
linear