3) Which is not true about the rectangular coordinate system?

A. The horizontal line is called x-axis.

B. The vertical line is called y-axis.

C. The point of intersection of the two axes is called origin.

D. The axes divide the coordinate plane into four quadrants, tabeled clockwise 1, 11, 111, and IV.

4) Choose which equation is an example of a linear equation in two variables.

A. 3x - 2y=9

C. x + y2 = 1

B. x2 + 2x=3

D. 4x + y = 0

5) Express 6x-2y = 8 in slope-intercept form y=mx+h.

A. -2y=6x+8

C. y = -3x+4

B. v=6r+8

D. 3.x -- 4

6) Describe the graph of the linear equation whose slope is -2 and its y-intercept is 5.

A. The graph of the equation is increasing from left to right.

B. The graph of the equation is decreasing from left to right.

C. The graph of the equation is parallel to y-axis.

D. The graph of the equation is parallel to x-axis.​