4) which linear system has been correctly solved for one of the variables from the following system?
2x - y = -1
2x + y = -7

a. 2x - y = -1 y = 2x - 7
b. 2x - y = -1 y = -2x + 7
c .y = 2x + 1 2x + y = -7
d. y = -2x + 7 2x + y = -7

Find percent notation for 0.008 0.008=

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.