math - ALgbera

20141009011541test_sevenpointsixteen-2.docx

Which is a solution of the equation? 2x – y = 5 (Points : 4)

7 (2, –1) (1, 2) (3, –1)

Question 2.2

. Identify the coordinates of point E. (Points : 4)

(3, –2) (–2, 3) (–2, –3) (–3, –2)

Question 3.

What is the slope of the line passing through points A and B?

(Points : 4)

–3

Question .4.

What is the slope of the line that passes through the points (1, 3) and (5, –2)? (Points : 4)

Question .5.

What is the slope of a line parallel to the line whose equation is 3x – 4y = 8? (Points : 4)

Question .6.

Select the equation of the line in slope-intercept form:

4x + 9y = 36

(Points : 4)

Question .7.

What is the relationship between the lines determined by the following two equations?

15x – 3y = –12 y = 5x + 7

parallel perpendicular neither parallel nor perpendicular they are the same line

Question .8.

Which of the following has a slope of –2 and a y-intercept of 4?

y = –2x + 4 y = 2x + 4 y = 2x – 4 y = –2x – 4

Question .9.

Given the linear equation x + y = 5, find the slope of its graph.

–5 –1 1 5

Question 10.

Which is the graph of the inequality y ≥ 2x + 3?

Question 11.

What are the x- and y-intercepts of the line? 2x + 3y = –12

x-intercept –6, y-intercept –4 x-intercept –6, y-intercept 4 x-intercept –4, y-intercept 6 x-intercept 4, y-intercept –6

Question 12.

Select the equation of the line that passes through the point (–2, –1) and has slope 5 in point-slope form.

(y – 1) = 5(x – 2) (x + 2) = 5(y – 1) (x – 2) = 5(y + 1) (y + 1) = 5(x + 2)

Question 13. Write the equation of the graph.

y – 3 = –½(x + 1) y = ½x + 5 y – 3 = ½(x + 1) y + 3 = –½(x – 1)