Help plz! I dont understand this problem!! Use the point and the slope to graph each line. Write the equation of the line.
a) The line contains point (2,-2) and is perpendicular to a line with slope -1.
b) The line passes through point (-1,-4) and has slope -2.

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180