Solutions to Equations in Two Variables

Which equation represents the following graph?

• y = 3x + 2

• y = -2x + 3

• y = 2x + 3

• y = -3x + 2

The graph of linear equation x + y = 2, cuts the y-axis at:

• a. (2,0)

• b. (0,2)

• c. (0,1)

• d. (1,1)

Tags

CCSS.HSF-IF.C.7A

Any point on the line x = y is of the form:

• (k, -k)

• (0, k)

• (k, 0)

• (k, k)

The positive solutions of the equation ax + by + c = 0 always lie in the:

• a) 1st quadrant

• b) 2nd quadrant

• c) 3rd quadrant

• d) 4th quadrant

Tags

CCSS.HSF-IF.C.7A

Equation of the line parallel to x-axis and 6 units above the origin is:

• x = 6

• x = –6

• y = 6

• y = –6

The graph of which of the following equations passes through the origin?

• (i) y = 2x + c

• (ii) y = 2x – c

• (iii) y = 2x

Is (3, 2) a solution of x + y = 6?

• yes

• no

• may be, cannot judge.

• none of the above

The geometrical representation of a linear equation

• Straight line

• Curve

• Parabola

• Either (b) or (c)

The graph of the linear equation in two variables y = mx is _____

• a line parallel to x - axis 

• a line parallel to y - axis 

• a line passes through the origin

• not a straight line

In slope intercept form (y=mx+b) what is the "m"?

• The y-intercept

• The x-intercept

• The slope (rate of change)

• A point

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3